H03.REV

PIPING

NOTE: FINAL DATE: JUNE, 1988.

Part 1 -	GENERAL

1)	WORK INCLUDED

A.	Work in this Section includes the providing of labor, materials, equipment and services necessary for a complete and safe installation in accordance with the contract documents and all applicable codes and authorities having jurisdiction for the following

1.	Pipe.

2.	Fittings.

3.	Valves.

4.	Motorized valve operators.

5.	Strainers.

6.	Expansion joints.

7.	Hangers, supports, guides.

8.	Sleeves.

9.	Accessories.

2)	RELATED WORK AND REQUIREMENTS

A.	Requirements of GENERAL CONDITIONS, DIVISION NO. 1 and Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK apply to all work in this Section

3)	REFERENCE STANDARDS

A.	Published Specifications' standards, tests or recommended methods of trade, industry or governmental organizations apply to work in this Section

B.	Comply with all applicable national, state and local codes and refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for additional Reference Standards

C.	In addition, comply with all standards or associations as specified herein including, but not limited to, the following, as applicable

1.	American Society for Mechanical Engineers (ASME).

2.	American Society for Testing and Materials (ASTM).

3.	American National Standards Institute (ANSI).

4.	Manufacturers Standardization Society of the Valve and Fitting Industry (MSS)

4)	QUALITY ASSURANCE

A.	Refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for Guarantee and other Quality Assurance requirements

5)	SUBMITTALS

NOTE: EDIT TO SUIT PROJECT REQUIREMENTS. INCLUDE ONLY THE ITEMS OF THIS SECTION DIRECTLY AFFECTING WORK OF THIS SECTION

A.	Submit shop drawings for piping and all related accessories in accordance with the Contract Documents

B.	Prepare general layout drawings, as follows:

1.	Minimum 1/4 inch scale piping layout with fittings, valves and equipment, use single line below 4 inches and double line 4 inches and above

2.	Minimum 3/8 inch scale, double line layout and sectons where required for coordination drawings

3.	Indicate location of hangers, supports, guides and anchors, expansion joints and sleeves

C.	Submit stress calculations upon request.

D.	Submit calculations for anchors upon request.

E.	Submit catalog cuts for fittings, flanges, unions, bolts, nuts, gaskets, hangers, guides and anchors

F.	Submit schedule of pipe type and rating for each system.

G.	Submit schedule listing type make and model number, size and service for valves, motorized valve operators, strainers, flanges, fittings and equipment

Part 2 -	PRODUCTS

1)	BASE BID MANUFACTURERS

A.	Valves:

1.	Gate, globe and check: Crane Co., Jenkins Bros., Powell Valve Co., Walworth Co., Lunkenheimer Co., Hammond Valve Corp. (Industrial), Milwaukee Valve Co., Inc., Stockham Co. and Nibco Inc

2.	Silent check: Mission Valve and Pump Co., Mueller Steam Specialty, Williams-Hager (Williams Gauge Co.), M.C.C. Centerline and The Smolensky Valve Co

3.	Lubricated tapered plug: Rockwell International and Walworth Co

4.	Eccentric plug: DeZurick Corp and Homestead Valve Co.

5.	Butterfly: Allis-chalmers, B.I.F., M.C.C. Centerline, Henry Pratt, Keystone, Demco and NIBCO Inc

6.	High performance butterfly (Trunnion): Jamesbury Corp., Hills-McCanna Co., Posi-Seal International, Inc. and Dezurick Corp

7.	Ball: Cameron Co., Grove Valve and Regulator Co., Hills-McCanna Co., Jamesbury Corp., Jenkins Bros., Lunkenheimer Co., Powell Valve Co. and Worchester

8.	Relief, steam type: Kunkle Valve Co., Lonergan Co. and Consolidated Division of Dresser Industries

B.	Motorized valve operators: E.I.M. Co., Limitorque Corp. and Rotork Controls Inc

C.	Strainers:

1.	Y-type and basket: Elliot Div. (Carrier Corp), McAlear, Mueller Steam Specialty, Sarco Co. and Zurn Industries, Inc

2.	Duplex: Elliot Div. (Carrier Corp) and Zurn Industries, Inc

D.	Expansion Joints:

1.	Packless: ADSCO Manufacturing Corporation, Zallea Bros., Inc., Fulton-Sylphon Div. Controls, Tube Turns Div (Chemetron Corp) and Atlantic Metal Hose Co., Inc./Aero-Flex Div

2.	Packed: Advanced Thermal Systems Inc., ADSCO Manufacturing Corporation and Yarway Corp

3.	Ball joints: Barco Div. (Aeroquip Corp)

E.	Welded fittings: Babcock & Wilcox, Bonney Forge Foundry, Inc., Ladish Co., Taylor Co. and Tube Turns Div (Chemetron Corp

F.	Mechanical couplings and fittings: Certain Teed Products Corp. and Victaulic Company of America

G.	Flange gaskets: Garlock, Inc., Manville Corp. RM Industries and Klinger

H.	Unions: Dart Corp.

I.	Hangers and Supports.

1.	ITT Grinnell.

2.	Carpenter & Patterson Inc.

3.	B-line Systems Inc.

2)	PIPE

A.	Steel pipe shall be black and hot dipped galvanized of weight and wall thickness as noted, in accordance with ASTM specifications as follows

1.	A 120: Continuous, butt welded.

2.	A 53: Continuous furnace butt welded, Type F.

3.	A 53 Grades A and B: Type S seamless or Type E electric resistance welded

4.	A 106 Grades A and B: seamless.

NOTE: THE FOLLOWING ASTM SPECIFICATIONS SHALL BE USED ON PROJECTS WITH PIPE SIZES OVER 16 INCHES

5.	A 134: Electric fusion welded, straight seam.

6.	A 671: Electric fusion welded.

7.	API 5L: Line pipe.

B.	Copper tubing:

1.	ASTM B 88, Types K or L, hard drawn, except as noted.

2.	ASTM BS 88, Type K, annealed or soft where noted or required by service

NOTE: FOR REFRIGERANT PIPING

3.	ASTM B 280, factory cleaned, nitrogen charged and capped.

C.	Lightweight copper pipe (Type TP) shall be ASTM B 302, Type B, hard drawn, seamless, same OD as IPS pipe

NOTE: FOR N.Y.C. PROJECTS. CHECK WITH PLUMBING DEPT REGARDING STAINLESS STEEL, DUCTILE IRON PIPING AND DUCTILE IRON MECHANICAL JOINT PIPING

D.	Stainless steel: Standard weight except as noted, seamless 18-8 Cr Ni Type 304, ASTM-312

E.	Ductile iron: Flanged pipe shall be in accordance with ANSI/AWWAC151/A21.51. Flanges shall match ANSI B16, Class 125 and Class 250 flanges. Thread for threaded flange pipe shall conform to ANSI B 2.1.

NOTE: TO BE USED FOR UNDERGROUND CHILLED WATER OR CONDENSER WATER AS APPLICABLE

F.	Ductile iron: Mechanical joint type shall be in accordance with ANSI/AWWA C151/A 21.5

1.	Mechanical joint ANSI/AWWA C111/A21.11.

2.	Thickness Class: 50 through 56.

3.	Fittings: ANSI/AWWA C110/A21.10.

G.	Red brass: ASTM B 43, seamless, annealed, 85 percent copper IP

NOTE: INTENDED FOR POSSIBLE SNOW MELTING APPLICATIONS WHERE BUILDING IS BASEMENTLESS OR HAS A BASEMENT REMOTE FROM SNOW MELTING SLAB. CONNECTIONS BETWEEN COIL LENGTHS ARE MADE WITH NYLON SERRATED ADAPTERS AND STAINLESS STEEL CLAMPS. THE PIPE IS GENERALLY TIED WITH WIRE TO 6 IN. X 6 IN. SIDEWALK REINFORCING MESH AND AIR LEAKAGE TESTED AT 80 PSIG. DO NOT SPECIFY WITHOUT PRIOR APPROVAL OF DEPT cHIEF ENGINEER

H.	High density polyethylene shall be ASTM D 2239 with Plastic Pipe Institute rating of PE 3306 as follows

1.	Standard dimensional ratio:

a.	1/2 inch IPS: 11.5.

b.	3/4 inch to 2 inch IPS: 15.0.

2.	K factor shall be 3.95 at 140 deg F mean temperature.

3.	Maximum allowable working pressure shall be 30 psig at 140 deg F

4.	Similar to Phillips Petroleum Marlex.

NOTES: 1. REFER TO SHIS COMPUTER RUNS ON ALLOWABLE WORKING PRESSURES TO VERIFY SCHEDULE OR THICKNESS OF WALL ON THE LARGER PIPE SIZES, SAY 12 IN. AND LARGER 2. IN WATER SYSTEMS THE EFFECTIVE PRESSURE IS THE SUM OF THE APPLIED PRESSURE (EXPANSION TANK), THE PUMP HEAD AT MINIMUM FLOW, AND THE STATIC HEAD GAIN (HEIGHT DIFFERENCE BETWEEN THE SYSTEM LOW POINT AND THE EXPANSION TANK WATER LEVEL) 3. THE LISTING FOR HIGH PRESSURE STEAM AND CONDENSATE RETURN IS FOR SYSTEMS TO 225 PSIG; IF LESS THAN 225 PSIG CHANGE TO LIMIT OPERATING PRESSURE. MEDIUM PRESSURE STEAM AND CONDENSATE RETURN IS FROM 16 PSIG TO 100 PSIG. LOW PRESSURE STEAM AND CONDENSATE RETURN IS TO 15 PSIG 4. CHECK LOCAL CODES FOR PIPE MATERIAL OF PUMPED FUEL OIL AND DIESEL OIL WHEN STORAGE TANKS ARE ABOVE THE LOWEST LEVEL. N.Y.CITY CODE REQUIRES SEAMLESS ONLY; ALSO NOTE REQUIREMENT OF ENCLOSING MASONRY WALLS FOR RISERS. ON OUT-OF-TOWN PROJECTS, PIPE-WITHIN-PIPE INSTALLATION MAY BE PERMITTED. CHECK 5. COPPER TUBING TYPE "K" IS INTENDED FOR NO. 2 FUEL OIL BOILERS AND WATER HEATERS TO 2000 SQ FT EDR. ABOVE 2000 SQ FT EDR SPECIFY STEEL. N.Y.C. CODE REQUIRES ANSI SCHEDULE 40 STEEL WELDED EXCEPT FOR REQUIREMENTS IN NOTE 3 ABOVE. FOR LARGER INSTALLATIONS, SPECIFY STEEL 6. FOR DIESEL ENGINE EXHAUST SCHEDULE 40 IS INDICATED. ON LARGER PIPE SIZES CONSIDER SCHEDULE 20. NOTE N.Y.C. BUILDING CODE PERMITS 3/16 IN. THICK PIPE WALL THICKNESS AS A MINIMUM. IF THREADED PIPE IS USED, SCHEDULE 40 PIPE MUST BE USED 7. SPECIFY STEEL FOR REFRIGERANT RELIEF FOR ELECTRIC HERMETIC OR STEAM DRIVEN CENTRIFUGAL MACHINES AND COPPER FOR SELF-CONTAINED AIR CONDITIONERS, RECIPROCATING PACKAGE WATER CHILLERS AND SIMILAR APPLICATIONS 8. FOR WATER TREATMENT PIPING VERIFY MATERIAL WITH WATER TREATMENT CONSULTANT

3)	FLANGES AND PIPE FITTINGS

A.	Steel flanges and pipe fittings shall be in accordance with ASTM A 105 and A 216

4)	SERVICES

A.	The following pipe applies to systems specified except as noted

NOTE: NEW YORK CITY BUILDING CODE DEFINES HIGH PRESSURE STEAM AS A SYSTEM OPERATING AT STEAM PRESSURES OF MORE THAN 15 PSI

1.	High Pressure Steam System, in excess of 250 psig to 400 psig total temperature below 650 deg F

a.	Material shall be steel in accordance with ASTM A 106 or A 53, seamless

b.	Wall thickness shall be:

(1)	To 2 inch: Schedule 80 when threaded ends. Schedule 40 when socket welding ends

(2)	2-1/2 inch to 10 inch: Schedule 40, welded ends only

(3)	12 inch to 16 inch: .375 inch wall thickness, welded ends only

(4)	18 inch to 20 inch: .375 inch wall thickness, Grade B, welded ends only

(5)	24 inch: .500 inch wall thickness, grade B, welded ends only

2.	High Pressure Steam System, in excess of 125 psig to 225 psig, total temperature below 450 deg F

a.	Material shall be steel in accordance with ASTM A 53, seamless

b.	Wall thickness shall be:

(1)	To 2 inch: Schedule 80, threaded ends.

(2)	2-1/2 inch to 10 inch: Schedule 40, welded ends

(3)	12 inch to 24 inch: .375 inch wall thickness, welded ends

3.	Medium Pressure Steam System, not exceeding 100 psig total temperature not exceeding 450 deg F

a.	Material shall be steel in accordance with ASTM A 53, seamless, or A 120, seamless and wall thickness as specified for high pressure steam not above 250 psig

4.	Low Pressure Steam System, not exceeding 15 psig:

a.	Material shall be steel in accordance with ASTM A 53 or A 120, welded or seamless and Schedule 40 wall thickness

5.	Below Atmospheric (Vacuum) Steam System:

a.	Material shall be steel in accordance with ASTM A 53 or A 120, welded or seamless and Schedule 10 wall thickness

6.	High Pressure Condensate Return System, above 125 psig: Material shall be steel in accordance with ASTM A 53, Schedule 80

7.	Medium pressure Condensate Return System, below 125 psig: Material shall be steel in accordance with ASTM A 120, Schedule 80

8.	Low Pressure Condensate Return System, below 15 psig: As specified for Medium Pressure Condensate Return

9.	Pumped Condensate Return System, above 220 deg F: Material shall be steel in accordance with ASTM A 53 or A 120 and Schedule 80 wall thickness

10.	Pumped Condensate Return System, below 220 deg F: Material shall be steel in accordance with ASTM A 120, Schedule 80

11.	High temperature Water System, 350 deg F to 450 deg F supply temperature: Material shall be all welded system, steel in accordance with ASTM A 106 or A 53, seamless, with wall thickness, as follows:

a.	To 2 inch: Schedule 40, Socket weld ends.

b.	2-1/2 inch to 10 inch: Schedule 40, butt weld ends

c.	12 inch to 16 inch: .375 inch wall thickness, Grade butt weld ends

d.	18 inch to 24 inch: .500 inch wall thickness, Grade butt weld ends

12.	Medium Temperature Water System, 220 to 350 deg F supply temperature shall be all welded system with material as specified for High Temperature Water and wall thickness as follows:

a.	To 2 inch: As specified for high temperature water

b.	2-1/2 inch to 10 inch: As specified for High Temperature Water

c.	12 inch and larger: .375 inch wall thickness.

13.	Low Temperature Water Systems, in excess of 100 psig 40 to 220 deg F supply temperature (hot water, condenser water, chilled water - primary and secondary systems)

a.	Material shall be steel in accordance with ASTM A 53, seamless, Grades A or B with wall thickness as follows

(1)	To 2 inch: Schedule 80 threaded pipe or Schedule 40 socket weld end pipe

(2)	2-1/2 inch to 10 inch: Schedule 40 welded end pipe

(3)	12 inch and larger: .375 inch wall thickness up to 250 psig and 0.5 inch wall thickness up to 350 psig

14.	Low Temperature Water System, not in excess of 100 psig , -20 to 220 deg F supply temperature (hot water heating, condenser water, chilled water - primary and secondary brine and glycol systems

a.	Material shall be steel in accordance with ASTM A 53 or A 120 with wall thickness to 10 inch: Schedule 40 and 12 inch and larger: .375 inch wall thickness

15.	Boiler Feed Water System:

a.	Above 220 deg F: As specified for high temperature water

b.	Below 220 deg F: As specified for low temperature water in excess of 100 psig

16.	Boiler Blow Down System shall be all welded construction, with steel material in accordance with ASTM A 106 or A 53, seamless and Schedule 80 wall thickness

17.	Fuel Oil Piping System inside building shall be double wall (pipe within a pipe) all welded construction with steel material in accordance with ASTM A 53, seamless

a.	Wall thickness: Schedule 40 (New York City: Schedule 80)

(1)	To 2 inch: Socket weld ends.

(2)	2-1/2 inch and above: Butt weld ends.

NOTE: OTHER DUAL PIPING IS AVAILABLE CHECK WITH CHIEF ENGINEER

18.	Under ground fuel oil piping shall be double wall (pipe within a pipe)

a.	The carrier piping shall be all welded construction with ASTM A53, seamless. Wall thickness schedule 40 (New York City: Schedule 80).

(1)	To 2 in.: Socket weld ends.

(2)	2 1/2 in. and above: butt weld ends.

b.	Outer conduit shall be high impact seamless polyvinyl chloride schedule 40. Non-corrosise support spacers 3/4 in. thick minimum on center and 7 feet center to center and allow for fluid drainage.

c.	Piping system shall include an alarm leak detection system which will detect a leak in the carrier pipe or the outer conduit

d.	Similar to Insul-8 containment pipe system by Rovanco or approved equal

19.	Fuel Oil Gauge Piping shall be copper material, Type L, ASTM B 88

20.	Protective enclosure piping for Fuel Oil Piping and Fuel Oil Gauge Piping shall be galvanized steel, ASTM A 120 or A 53 with Schedule 40 wall thickness

21.	Water Treatment Chemical Feed Piping and Sampling Piping

NOTE: CHECK WITH WATER TREATMENT CONSULTANT. WHERE TREATMENT CHEMICAL SOLUTION IS ACIDIC, AN APPROPRIATE ACID RESISTANT PIPE SHOULD BE SPECIFIED

PIPE

a.	As specified for system piping to which connected.

b.	Red brass, ASTM B 43, standard weight.

PIPE

22.	Instrument piping:

PIPING

a.	As specified for system piping to which connected.

b.	Red brass, ASTM B 43, standard weight.

PIPING

23.	Atmospheric air vents shall be galvanized steel in accordance with ASTM A 120 or A 53, Schedule 40

24.	Commercial Refrigeration System (Refrigerant) shall be copper, ACR in accordance with ASTM B 280

25.	Air Cooled Condenser System (Refrigerant) shall be copper, ACR in accordance with ASTM B 280

26.	Evaporative Condenser System (Refrigerant) shall be copper, ACR in accordance with ASTM B 280; (overflow, drain and bleed) shall be galvanized steel, Schedule 40 in accordance with ASTM A 120 or A 53

27.	Refrigerant Relief System (Centrifugal Refrigeration Units) shall be steel, Schedule 40 in accordance with ASTM A 120 or A 53

28.	Refrigerant Relief System (all other units) shall be copper, Schedule L in accordance with ASTM B 88

NOTE: USE ONLY WHEN UTILIZING CONDENSER WATER FOR COOLING

ENG

29.	Diesel Engine Jacket Cooling Water System: As specified for condenser water

30.	Diesel Engine Jacket Water System:

a.	To 2 inch: Steel, Schedule 80 in accordance with ASTM A 53 or A 120

b.	2-1/2 inch and larger: Steel, Schedule 40 in accordance with ASTM A 53 Grades A or B

ENG

31.	Compressed Air System (Diesel Engine Starting) shall be steel, Schedule 40 in accordance with ASTM A 120 or A 53

32.	Diesel Lubricating Oil System shall be steel, Schedule 40 in accordance with ASTM A 120 or A 53

33.	Diesel Engine Exhaust System shall be steel, Schedule 40 in accordance with ASTM A 53 Grades A or B

34.	Diesel Engine Breather Vent System shall be steel, Schedule 20 in accordance with ASTM A 120 or A 53

NOTE: COORDINATE WITH PLUMBING DEPARTMENT FOR SELECTION OF MATERIAL

ILL

35.	Fill and Make-Up Water System (City Water) to match connecting Plumbing Work shall be red brass, Type L or Type TP-IPS in accordance with ASTM B 88

NOTE: INSERT SIZES; COORDINATE WITH PLUMBING SPECIFICATION

36.	Fill and Make-Up Water System (City Water) to match connecting Plumbing Work: To -----, red brass, Schedule IPS - std wt in accordance with ASTM B 53 or copper, Type L or Schedule TP-IPS, ASTM B 88. Above -----, galvanized steel, Schedule 40 in accordance with ASTM A 120 or A 53 Grades A or B

37.	Fill and Make-Up Water (City Water):

ILL

a.	To 2 inch: Steel, Schedule 80 in accordance with ASTM A 53 Grade A or B

b.	2-1/2 inch and larger: Steel, Schedule 40 in accordance with ASTM A 53 Grades A or B

38.	Condensate Cooler Cooling Water System shall be as specified for fill and make-up water

39.	Refrigeration Unit Cooling Water System shall be as specified for fill and make-up water

40.	Self-contained Air Conditioner Cooling Water shall be as specified for fill and make-up water

41.	Induction Unit Runouts System shall be copper, Type L in accordance with ASTM B 88

42.	Fan Coil Unit Runouts System shall be copper, Type L in accordance with ASTM B 88

43.	Piping under Sheet Metal U-Covers in Floor Fill shall be steel, Schedule 80 in accordance with ASTM A 53 Grades A or B

44.	Miscellaneous drains and overflow:

a.	To 2 inch: Copper, Type L in accordance with ASTM B 88

b.	2-1/2 inch and larger: Galvanized steel, Schedule 40 in accordance with ASTM A 120 or A 53

AIR

45.	Control Air System: Refer to Section AUTOMATIC CONTROL SYSTEMS

NOTE: USE WHEN SECTION COMPRESSED AIR SYSTEM IS USED

46.	Control Air System shall be copper Type L in accordance with ASTM B 88

AIR

47.	All other piping shall be galvanized steel, Schedule 40 in accordance with ASTM A 53 Grade A or B

5)	FITTINGS

A.	For steel pipe:

1.	To 2 inch:

a.	Steel fittings shall be socket weld ends in accordance with ANSI B 16.11

b.	Cast iron threaded fittings shall be in accordance with ANSI B 16.4

c.	Cast iron flanged fittings shall be in accordance with ANSI B 16.1

(1)	125 lb wsp.

(2)	250 lb wsp where noted.

d.	Malleable iron fittings shall be in accordance with ANSI B 16.3

NOTE: REVIEW WITH PLUMBING DEPT IF APPLICABLE. COORDINATE PIPING.

(1)	150 lb wsp, galvanized, for fill and make-up piping

(2)	300 lb wsp, where noted.

e.	Cast iron drainage fittings shall be in accordance with ANSI B 16.12

f.	Galvanized fittings for galvanized piping.

g.	Ductile iron shall be in accordance with ASTM A 445. Contractor has option to furnish 300 lb ductile iron in lieu of 250 lb cast iron or 300 lb malleable iro

2.	2-1/2 inch and larger welded:

a.	Butt weld fittings same weight as piping and in accordance with ANSI B 16.9

b.	Branch connections:

(1)	Equal to main and to 2 pipe sizes smaller, use weld tees

(2)	Three or more pipe sizes smaller than main, but 2-1/2 inch and larger, use Bonney Weld-o-lets

(3)	To 2 inch: Bonney Weld-o-lets, Thread-o-lets, threaded Nip-o-lets, or steel couplings

NOTE: INTENDED FOR WATER SERVICES BELOW 150 DEG F DO NOT SPECIFY WITHOUT PRIOR APPROVAL OF DEPARTMENT CHIEF ENGINEER

3.	Mechanical couplings and fittings: Contractor at his option may provide mechanical couplings and fittings in lieu of welded fittings and joints for water services not exceeding 150 deg F

a.	Mechanical couplings shall be malleable iron in accordance with Federal Specification QQ-I-666C, Grade II for following working pressures: = = up to 6 inch IPS - 1,000 psig. = 8 to 12 inch IPS - 800 psig. = 14 to 24 inch IPS - 300 psig. =

(1)	Grooved type or steel shoulder ends shall be similar to Victaulic

(2)	Gaskets shall be synthetic rubber in accordance with ASTM D-735, Grade R 615 BZ

(3)	Bolts shall be oval neck track type in accordance with ASTM A 183

b.	Fittings shall be grooved type, malleable iron as specified for couplings to 12 inch. For 12 inch to 24 inch steel in accordance with ASTM A 234, rated 300 psig working pressure

c.	Companion pipe grooving shall be as per coupling and fitting manufacturer's recommendations

B.	For copper tubing:

1.	Solder joint shall be wrought copper in accordance with ANSI B16.22 or bronze castings in accordance with ANSI B-16.2

a.	Solder shall be 95-5 in accordance with ASTM B 32.

b.	For refrigerant piping and where noted, solder shall be silver brazing alloy, similar to Handy and Harman Easy-Flo

2.	Compression and flared fittings shall be cast brass in accordance with ANSI B16.26

C.	For lightweight copper pipe:

1.	Fittings shall be standard cast bronze, banded, brazing joint in accordance with MIL-F-1183

2.	Silver brazing alloy shall be similar to Handy and Harman Sil-Fos

D.	For red brass pipe:

1.	Fittings shall be standard cast bronze, banded, threaded in accordance with ANSI B16.15

E.	Flanges:

1.	For steel pipe flanges shall be of matching quality, grade and thickness.

a.	Welded: Welding neck, slip-on, socket welded in accordance with ANSI B 16.5, slip-on flanges shall be back welded

(1)	150 lb wsp.

(2)	300 lb wsp.

(3)	300 lb ring groove for high pressure service.

2.	Screwed flanges shall be standard cast or extra heavy cast iron in accordance with ANSI B 16.4

3.	Match connecting flange:

a.	Class.

b.	Facing.

F.	Flange gaskets shall be one-piece ring type 1/16 inch thick (minimum), except as noted, suitable for temperature, pressure (operating and test) and service of system

1.	Non-asbestos elastometer for 250 F and under.

2.	Non-asbestos spiral wound 304 stainless steel for above 250 deg F, similar to Flexitallic

3.	Fuel oil service shall be of neoprene.

4.	For joints of dissimilar metals, provide isolating gaskets, sleeves and washers between flanges, bolts and nuts. Gaskets shall be similar to duPont Teflon

G.	Unions:

1.	For steel pipe:

NOTE: WHERE CONTINUAL EXPANSION AND CONTRACTION OCCUR USE THE FOLLOWING

MAL

a.	Malleable iron 300 lb wsp.

(1)	Ground jacket seat: brass-to-iron, black or galvanized to match piping

b.	A.A.R. malleable iron 300 lb wsp.

MAL

c.	Forged steel, 3000 lb wog class, bronze-to-steel or steel-to-steel seats, where noted or required for service

2.	For red brass pipe.

a.	All bronze, 150 lb wsp, ground joint seat

b.	not be used on Medium or High Temperature Water Systems or Oil Systems

6)	BOLTS AND NUTS

A.	Bolts shall be chrome-molybdenum bolt stud in accordance with ASTM A 193 Grade B7 with full length threads in accordance with ANSI B 1.1. Threaded Length shall be sufficient to project beyond nuts one complete thread when joint is made

B.	Nuts shall be carbon steel in accordance with ASTM A 194 Grade 2. Nuts shall be hexagon heavy series type. Threads shall be the same as for bolts

7)	VALVES

A.	The following valves shall be of the same manufacture:

1.	Gate, globe and swing check: Similar to Jenkins Bros. of figure numbers except as noted

2.	Lubricated plug valves: Similar to Rockwell-Nordstrom of figure numbers noted

3.	Butterfly valves: Similar to Center Line and Posi-seal of figure numbers noted

4.	Ball valves: Similar to Jenkins Bros., and Cameron of figure numbers noted

B.	Valve ends, except as noted, shall be:

1.	Screwed ends: Valves 2 inch and smaller in screwed steel piping

2.	Socket weld ends: Valves 2 inch and smaller in all-welded piping

3.	Solder ends: Valves 2 inch and smaller in copper tubing

4.	Socket ends: Valves 2 inch and smaller in copper pipe.

5.	Butt welding ends shall be as noted.

6.	Flanged ends shall be for all other valves.

C.	By-pass globe valves: 3/4 inch for 8 inch gate valves, 1 inch for 10 inch and larger gate valves. By-pass valves shall be of same pressure rating as gate valves

D.	The following valves shall be provided with chain operated handwheels, rustproof chain and chain guide

1.	Valves located 8 feet or more above operating floor or platform and as noted

E.	Pressure classes for steam service:

1.	Gate, globe and check valves:

a.	To 2 inch:

(1)	To 99 psig maximum system pressure: 150 lb wsp, bronze

(2)	100 to 240 psig maximum pressure: 300 lb wsp, bronze

(3)	250 to 600 psig maximum system pressure: 800 ANSI, forged steel

b.	2-1/2 to 16 inch:

(1)	To 99 psig maximum system pressure: 125 lb wsp, cast iron

(2)	100 to 240 psig maximum system pressure: 250 lb wsp, cast iron to 12 inch 14 inch and 16 inch good only up to 200 psig

(3)	250 to 390 psig to maximum system pressure, 300 ANSI, cast steel

(4)	400 to 600 psig maximum system pressure: 600 ANSI, cast steel

2.	Pressure reducing valves: Class shall be based on pressure at inlet to station

3.	Other valves shall be the same as for gate valves, unless otherwise noted

F.	Pressure classes for low temperature water systems 40 to 220 deg F

1.	Gate, globe and check valves:

a.	To 2 inch:

(1)	To 240 psig maximum system pressure: 150 lb wsp (300 lb wog), bronze

(2)	250 to 390 psig maximum system pressure: 300 lb wsp (600 lb wog), bronze

(3)	400 to 600 psig maximum system pressure: ANSI 800: Forged steel

b.	2-1/2 to 12 inch:

(1)	To 145 psig maximum system pressure: 125 lb wsp (200 lb wog), cast iron

(2)	150 to 180 psig maximum system pressure: 150 ANSI, cast steel

(3)	185 psig to 550 psig maximum system pressure: 200 ANSI, cast steel

c.	14 and 16 inch.

(1)	To 125 psig maximum system pressure: 125 lb wog, cast iron

d.	18 to 24 inch:

(1)	To 100 psig maximum system pressure: 150 lb wog, cast iron

2.	Plug valves.

a.	To 12 inch:

(1)	To 125 psig maximum system pressure: 200 lb wog, cast iron

(2)	130 to 300 psig maximum system pressure: 400 lb wog, cast iron

(3)	305 to 550 psig maximum system pressure: 300 ANSI, cast steel

b.	14 to 20 inch:

(1)	To 100 psig maximum system pressure: 200 lb wog, cast iron

(2)	105 to 225 psig maximum system pressure: 400 lb wog, cast iron

(3)	230 to 450 psig maximum system pressure: 300 ANSI, cast steel

3.	Other valves shall be the same as for gate valves, unless otherwise noted

G.	Pressure classes for high and medium temperature water systems above 220 deg F

1.	Gate, globe and check valves:

a.	To 2 inch:

(1)	To 800 psig maximum system pressure: 800, ANSI, forged steel, socket weld ends

b.	2-1/2 inch and larger:

(1)	To 180 psig maximum system pressure: 150 lb wsp, cast steel

(2)	185 to 450 psig maximum system pressure shall be 300 lb wsp, cast steel

H.	Gate valves:

1.	To 2 inch:

a.	Bronze, threaded ends, solid wedge, inside screw, traveling stem union bonnet

(1)	150 lb wsp: Fig. 47U.

(2)	300 lb wsp: Fig. 270U.

b.	Bronze, solder ends, solid wedge, inside screw, traveling stem, screw-in bonnet, for use with copper tubing, 300 lb wog: Fig. 1242

NOTE: THE FOLLOWING SHOULD BE USED WHEN ALL IRON SYSTEMS REQUIRED, SUCH AS CHEMICAL FEED SYSTEMS. CHECK WATER TREATMENT REPORT

c.	Iron body, stainless steel mounted, OS&Y, rising spindle, screwed ends, u-bolt held bonnet, 150 lb wsp (200 lb wog): Fig. 3651 A

d.	Forged steel, bolted bonnet, solid wedge, OS&Y, rising stem: Minimum 800 ANSI, Walworth Fig. W950S threaded, Walworth Fig. W950 SW socket welded

2.	2-1/2 inch and larger:

a.	Iron body, bronze mounted, solid wedge OS&Y, rising spindle, flanged

(1)	125 lb wsp: Fig. 651-C.

(2)	250 lb wsp: Fig. 204C.

b.	Cast steel, stainless steel trim, solid wedge, OS&Y, rising stem, flanged:

(1)	150 ANSI: Welding ends, Walworth Fig. 5202WE. Flanged ends Walworth Fig. 5202F

(2)	300 lb ANSI: Welding ends, Fig. 5206WE. Flanged ends, Walworth Fig. 5206F

I.	Globe and angle valves:

1.	To 2 inch:

a.	Bronze, regrind-renew, 500 Brinell stainless steel plug disc and 425 Brinell seat ring, union bonnet

(1)	150 lb wsp globe: Fig. 546P.

(2)	150 lb wsp angle: Fig. 548P.

(3)	300 lb wsp globe: Fig. 556P.

(4)	300 lb wsp angle: Fig. 558P.

b.	Bronze, solder ends, composition disc, screw-in bonnet, for use with copper tubing

(1)	300 lb wog globe: Fig. 1200.

(2)	300 lb wog angle: Fig. 1202.

c.	Forged steel, bolted bonnet, plug type disc of 500 Brinell stainless steel with stellited seat, OS&Y: minimum 800 ANSI Walworth Fig. W5520S, threaded: Walworth Fig. W5520SW socket welded

2.	2-1/2 inch and larger:

a.	Regrind-renew, iron body, level bronze disc and seat ring, OS&Y, flanged

(1)	125 lb wsp globe: Similar to Fig. 613C.

(2)	250 lb wsp globe: Similar to Fig. 923C.

b.	Cast steel, stainless steel trim OS&Y, rising stem, flange:

(1)	150 ANSI: Welding ends, Walworth Fig. 5275WE. Flanged ends Walworth Fig. 5275F.

(2)	300 ANSI:Welding ends, Walworth Fig. 5281WE Flanged ends Walworth Fig. 5281F

(3)	600 ANSI:Welding ends, Walworth Fig. 5295WE. Flanged ends, Walworth Fig. 5295F

c.	For steam throttling and steam by-pass service:

(1)	To 4 inch: 250 lb wsp, regrind-renew, iron body globe, 500 Brinell, stainless steel plug and dics, OS&Y, flanged, Fig. No. 923P

(2)	6 and 8 inch: 300 lb wsp, cast steel, Walworth Fig. 5281F

J.	Swing check valves:

1.	Access to elements:

a.	To 2 inch except as noted: Screwed caps or bonnets

b.	2-1/2 inch and larger: Bolted covers.

2.	Water, except at pump discharge and as noted:

a.	To 2 inch:

(1)	150 lb wsp: Bronze body, screwed ends regrind bronze disc, Fig. 92A

(2)	300 lb wsp: Bronze body, screwed ends regrind bronze disc, Fig. 762A

(3)	Minimum 800, ANSI: Forged steel, screwed and socket weld ends lift type, bolted bonnet, Walworth Fig. W5540S and W5540SW

(4)	300 lb wog: Bronze body solder ends, regrind bronze disc, to be used with copper tubing, Fig. 1222

b.	2-1/2 inch and larger:

(1)	125 lb wsp: Iron body, regrind-renew bronze disc, flanged, Fig. 624

(2)	250 lb wsp: Iron body, regrind-renew bronze disc, flanged, Fig. 339R

(3)	150 ANSI: Cast steel, swing type, bolted cover, stainless steel trim, flanged, Walworth Fig. 5341F

(4)	300 ANSI: Cast steel, swing type, bolted cover, stainless steel trim, flanged, Walworth Fig. 5344F

3.	Steam and condensate return:

a.	To 2 inch:

(1)	300 lb wsp: Bronze body, regrind bronze disc, Fig. 762A

(2)	300 lb wsp: For high and medium pressure condensate bronze body, regrind-renew nickel alloy disc and seat ring, union cap Fig. 966

b.	2-1/2 inch and larger:

(1)	125 lb wsp: Iron body, regrind - renew, bronze disk, flanged, Fig. 624

(2)	250 lb wsp: Iron body, regrind - renew bronze disk, flanged, Fig. 339R

(3)	300 lb ANSI: Cast steel, swing type, bolted cover, stainless steel trim, flanged, Walworth Fig. 5344F

K.	Silent check valves, spring loaded, globe type, flanged:

NOTE: DUE TO BODY DESIG, SPOOL PIECE MAY BE REQUIRED TO PERMIT VALVE REMOVAL. CHECK

1.	To 250 psig check valves shall be iron body, bronze trim. Similar to Muessco type, 103AP or 107AP

2.	Above 250 psig check valves shall be cast steel body, stainless steel trim. Similar to Muessco types 103-DT or 131-DT, or 109-DT or 113-DT

3.	Medium and High Temperture Hot Water shall be cast steel body, stainless steel trim, similar to Muessco 131-DT or 113-DT

L.	Lubricated plug valves shall be:

NOTE: NOT TO BE INSTALLED IN STEAM AND HIGH AND MEDIUM TEMPERATURE WATER SYSTEMS

1.	Screwed ends up to 2 inch , flanged 2-1/2 inch and larger

2.	Maximum port opening tapered plug suitable for lubrication under service pressure with plug in any position

3.	Lubricating guns shall be:

GUNS

a.	1 for every 10 valves.

b.	1 for every 50 valves.

GUNS

c.	Extra heavy, lever type, hydraulic hand gun.

d.	15,000 psig and 12 inch long connection hose, similar to Rockwell-Nordstrom Model No. 400-D

4.	Lubricant shall be similar to Rockwell Sealant No. 421 with 1 year supply, each valve

5.	Operators:

a.	Up to 6 inch shall be wrench, except as noted.

SET

(1)	Provide wrench set for each size valve.

(2)	Provide wrench for every 10 valves, each size

NOTE: ON VALVES 8 IN. AND LARGER CONSIDER WRENCH IN LIEU OF GEAR OPERATORS TO REDUCE COST PROVIDING THEY ARE INFRQUENTLY USED AND READILY ACCESSIBLE ON FLOOR OR EQUIPMENT PLATFORMS. CONSULT MANUFACTURER

NOTE: VALVES 8 INCHES AND LARGER WHICH ARE LOCATED 12 FEET AND ABOVE FROM M.E.R. FLOOR OR PLATFORM SHOULD BE NOTED ON DRAWINGS AS CHAIN OPERATED TYPE (OR) MOTOR OPERATED TYPE

SET

5

(A)	inch and larger shall be gear operated with permanently installed handwheel. Where noted for inaccessible overhead valves, provide chain operated handwheel with rustproof chain and chain guide

b.	Provide motor operated where noted.

6.	For piping less than 100 psi valves shall be minimum 200 lb wog class, cast iron body

a.	To 2 inch: Screwed.

b.	2-1/2 inch and larger: Flanged, 125 ANSI.

7.	For piping 100 psi to 250 psi valves shall be minimum 400 lb wog class, cast iron body

a.	To 2 inch: Screwed.

b.	2-1/2 inch and larger: Flanged, 250 ANSI.

8.	For piping over 250 psi valves shall be 300 ANSI, carbon steel body

a.	To 2 inch: Screwed.

b.	2-1/2 inch and larger shall be flanged, 300 ANSI, similar to the following Rockwell-Nordstrom numbers

(1)	Wog class: 200 lb.

(a)	To 2 inch: 114.

(b)	2-1/2 inch to 4 inch: 115.

(c)	5 inch and 6 inch: 185.

5

(A)	inch and 12 inch: 149.

(2)	Wog class: 400 lb.

(a)	To 2 inch: 214.

(b)	2-1/2 inch to 4 inch: 305.

(c)	5 inch: and 6 inch: 265.

5

(A)	inch and up: 1589.

(3)	ANSI: 300.

(a)	To 2 inch: 2024.

(b)	2-1/2 inch to 4 inch: 2025.

(c)	6 inch: 4245DB.

5

(A)	inch and up: 4249DB.

M.	Eccentric plug valves:

NOTE: FOR CIRCULATING WATER SYSTEMS TO 150 PSIG NOT TO BE INSTALLED IN HIGH AND MEDIUM TEMPERATURE WATER SYSTEMS. CAN BE USED WHERE FLOW IS IN ONE DIRECTION, WHERE FLOW COULD BE IN TWO DIRECTIONS DO NOT USE. CONSIDERABLE LOWER COST THAN LUBRICATED PLUG VALVE DUE TO ECONOMY CONSTRUCTION. REVIEW WITH DEPT CHIEF ENGINEER WHEN CONSIDERING THIS TYPE VALVE

1.	Screwed ends to 2 inch and flanged ends 2-1/2 inch and larger shall have permanently installed hand wheels. Where noted for inaccessible overhead valves, provide chain operated handwheel with rustproof chain and chain guide

2.	Valves shall be motor operated as noted in other Sections of these specifications, similar to Homestead Ballcentric. Where noted for inaccessible overhead valves, provide chain operated handwheel with rustproof chain and chain guide

a.	Valves shall be motor operated as noted in other Sections of these specifications, similar to DeZurick Corp. Series 400

N.	Balancing valves:

NOTE: FLOW BALANCING VALVES ARE APPLICABLE ONLY TO CONSTANT VOLUME CIRCULATING WATER SYSTEMS NOT EXCEEDING 220 DEG F AND 150 PSIG. SPECIFY ONLY AFTER SPECIFIC REQUIREMENTS AND CHARACTERISTICS HAVE BEEN ESTABLISHED WITH DEPARTMENT CHIEF ENGINEER. FOR STEAM CONSIDER HIGH PERFORMANCE BUTTERFLY VALVES (TRUNNION) AS SPECIFIED IN PAR. P

1.	Manually adjusted cocks: Use lubricated plug valves as hereinbefore specified

2.	Automatic pressure compensating valve with two pressure and temperature taps shall be Griswold Controls or Autoflow Inc., factory calibrated, direct acting

a.	200 psig, 250 deg F rating: Gray iron, ASTM A 48 Class

(1)	To 2 inch: Threaded.

(2)	3 inch and above: Flange mounted.

b.	500 psig , 400 deg F rating: Ductile iron ASTM A 536, grade 65-45-12

(1)	3 inch and above: Flange mounted.

RAD

3.	For direct radiation and unit heaters, refer to Section "HOT WATER SYSTEMS"

4.	For direct radiation and unit heaters, refer to Section "STEAM SYSTEMS"

RAD

O.	Butterfly valves:

NOTE: FOR CIRCULATING WATER SYSTEMS TO 150 PSIG. NOT TO BE INSTALLED IN HIGH AND MEDIUM TEMPERATURE WATER SYSTEMS. SPECIFY ONLY AFTER SPECIFIC REQUIREMENTS AND CHARACTERISTICS HAVE BEEN ESTABLISHED WITH DEPARTMENT CHIEF ENGINEER. FOR HIGHER PRESSURE, STEAM OR HIGH TEMPERATURE WATER APPLICATIONS CONSIDER HIGH PERFORMANCE BUTTERFLY VALVES (TRUNNION) AS SPECIFIED IN PAR. P

1.	Valves in insulated piping: Necks shall extend 2 inches above outside diameter of flanges to accommodate full thickness of insulation. Comply with AWWA Standard C504-70 class 150

2.	Operators:

a.	Valves to 8 inch: Provide handles with minimum of 10 locking positions and adjustable memory stop

NOTE: ON VALVES 8 IN. AND LARGER CONSIDER HANDLES IN LIEU OF GEAR OPERATORS TO REDUCE COST PROVIDING THEY ARE READLY ACCESSIBLE ON FLOOR OR EQUIPMENT PLATFORMS. CONSULT MANUFACTURER

5

(A)	inch and larger: Provide gear operators with adjustable balance return stops and position indicators

b.	Operating torque shall not exceed limits set by AWWA standards

NOTE: INDICATE LOCATIONS ON DRAWINGS.

3.	For circulating water systems where indicated, provide cast iron body, ductile iron or cast merchanite iron

a.	Flanges: Provide bodies suitable for installation between 125 ANSI cast iron screwed flanges or 150 ANSI steel welding neck, slip on screwed flanges or with flanges grooved for use with mechanical couplings. Contractor shall verify compatability of valve with slip on flanges when provided. Wafer type shall have at least four tapped holes assuring positive alignment between flanges

(1)	Valves in piping subject to removal: provide bodies flanged or tapped lug type with flanged spool piece on pipe removal side for supporting seat

b.	Stems: Provide 304 or 316, stainless steel stem minimum size equal to standards of AWWA-C504-70 class 150

c.	Seals: Stem seals shall be accomplished by compression of seat material and disc ends; additional seal shall be provided by a primary and secondary O ring on each open shaft end

d.	Bushings: Provide valve bushings at each end of shaft of permanently lubricated bronze on teflon

e.	Discs shall be bronze, fastened to shaft by means of key or two pins secured by lock nuts

f.	Seats shall be rigid, hard backed bonded replaceable EPDM

g.	Design working pressure shall be 150 psig.

h.	Factory leakage test shall be bubble tight at 150 psig disc differential

4.	Butterfly valves shall be similar to Center Line, Inc, Series "AAM" and "LTM"

NOTE: THE HIGH PERFORMANCE BUTTERFLY VALVE (TRUNNION) IS INTENDED FOR HIGH PRESSURE AND/OR HIGH TEMPERATURE APPLICATIONS WHERE IT BECOMES COMPETITIVE TO GATES OR LUBRICATED PLUGS 150 ANSI AND ABOVE, IN GENERAL. THEREFORE, ITS USE SHOULD BE LIMITED TO HIGH PRESSURE WATER SERVICES, HIGH TEMPERATURE WATER AND STEAM SERVICES. REVIEW WITH DEPARTMENT CHIEF ENGINEER. IF SPECIFIED INDICATE LOCATIONS ON DRAWINGS

P.	High performance butterfly valves (Trunnion):

1.	Provide wafer flangeless type for positioning between ANSI flanges. Where installed in piping subject to removal, provide flange or lugged type

2.	Body shall be cast steel with neck extended to suit insulation thickness

3.	Disc shall be cast steel.

4.	Stem shall be 17-4 ph stainless steel.

5.	Wear ring (seat) shall be:

NOTE: SELECTION DEPENDS ON SERVICE REQUIREMENTS. FOR HIGH TEMPERATURE WATER AND STEAM, SPECIFY STAINLESS STEEL; FOR WATER SERVICES, TEFLON OR URETHANE. VERIFY WITH MANUFACTURER

a.	Teflon or urethane with Buna-N or Viton backup O-ring for 150 ANSI and 300 ANSI service

b.	316 stainless steel wear ring with EPR O-ring.

6.	Provide non-asbestos packing material.

7.	Operators:

a.	Valves to 8 inch: Handles with minimum of 10 locking positions and adjustable memory stop

NOTE: ON VALVES 8 IN. AND LARGER CONSIDER HANDLES IN LIEU OF GEAR OPERATORS TO REDUCE COST PROVIDING THEY ARE READILY ACCESSIBLE ON FLOORS OR EQUIPMENT PLATFORMS CONSULT MANUFACTURER

5

(A)	inch and larger: Gear operators with adjustable balance return stops and position indicators

b.	Motor operated valves where noted.

8.	Factory leakage test shall be bubble tight to ANSI or wog pressure rating at corresponding service temperature

9.	Valves similar to following classes, ratings, sizes and Posi-Seal International, Inc. figure numbers

a.	Wog class: 200 lb.

(1)	ANSI rating: 150.

(2)	Sizes: 2 inch to 24 inch.

(3)	Figure number: 1144.

b.	Wog class: 500 lb.

(1)	ANSI rating: 300.

(2)	Sizes: 2 inch to 24 inch.

(3)	Figure number: 1264.

c.	Wog class: 720 lb.

(1)	ANSI rating: 300.

(2)	Sizes: 2 inch to 24 inch.

(3)	Figure number: 1264.

Q.	Ball valves:

NOTE: INTENDED FOR USE AS FOR SHUT-OFF VALVES IN PIPING TO SMALL STEAM OR HOT WATER REHEAT COILS IN TIGHT CEILING SPACE CONDITIONS, TO INDUCTION AND FAN COIL UNITS AND SIMILAR APPLICATIONS.

1.	To 2 inch IPS:

a.	Provide ball valves with bronze body, ball and stem and Teflon seats and stem seals constructed of Teflon impregnated non-asbestos 2 packing rings or equivalent

b.	Provide handle for actuating valve through quarter turn stop

c.	Provide valves with 150 lb wsp (400 lb wog) ratings, similar to Jenkins Fig. 32-A

NOTE: COORDINATE MOTORIZED OPERATOR SELECTION WITH ELECTRICAL AND AUTOMATION DEPARTMENTS AND INDICATE ON DRAWINGS

R.	Motorized valve operators, provide as follows:

1.	Mount operators on side or top at factory or at site under manufacturer's supervision. Provide gear operated single or double reduction. For 90 deg application, adjustable mechanical stops shall prevent travel of more than 90 deg

2.	Grease or oil lubricated.

3.	----- volt, ----- phase, ----- hertz,.

4.	Control circuit: ----- volt, transformer as required.

5.	Assembly:

a.	Motor shall be high speed, high torque, totally enclosed non-ventilated, Class B or F insulation and operational at up to 10 percent above or below nominal voltage. Motor shall be pre-lubricated, anti-friction bearing type with thermal overload protection

b.	Limit switches shall be integral to the unit. Gearing shall be bronze or stainless steel. Steel switches shall be fully adjustable and shall trip anywhere between full open and full closed, as required. Switches shall be heavy duty, open contact type with rotary wiping action. Provide minimum spare contacts: 2 normally open, 2 normally closed

c.	Torque switch shall have torque protection either direction, fully adjustable and shall shut off actuator motor when a predetermined amount of torque is reached

d.	Stem nut shall be high tensile bronze or material compatible to the valve stem and shall be constructed for easy removal without disassembling gear case

e.	Handwheel for manual operation: Handwheel shall declutch automatically when motor is energized. Rimpull shall not exceed a maximum of 80 lb. Handwheel shall be similar to Limitorque SMB and SMC

6.	Open/closed operation: All valves shall have integral control package including control transformer with fused secondary, motor reversing contactor (mechanically interlocked), limit switch compartment heater and terminal strip

a.	Indicating lights shall be:

(1)	Red light glows when valve closed.

(2)	Green light glows when valve open.

(3)	Intermediate position indication.

b.	Pushbutton station: Provide selector switch if required and momentary or maintained contacts as required

7.	Modulating service shall be controlled by analog signal - 4-20 ma DC with momentary pushbuttons

a.	Controls shall be mounted inside the actuator.

b.	Provide three phase power supply:

(1)	Solid state reversing controller.

(2)	Comparator circuit module.

(3)	Transformer.

(4)	2 position selector switch (auto/manual).

(5)	Limit switch compartment heater.

(6)	Mechanical dial position indicator with 1,000 ohm potentiometer

(7)	Class F insulation motor.

(8)	Mounted and wired.

(9)	Similar to Limitorque Modutronic 30.

c.	Provide single phase power supply:

(1)	Comparator circuit module.

(2)	Mechanical dial position indicator with 1,000 ohm potentiometer feedback

(3)	2 position (auto/manual) selector switch.

(4)	Limit switch compartment heater.

(5)	Motor: 2100 rpm D.C. in lieu of A.C.; class F insulation; 20 percent run value duty

(6)	Mounted and wired, similar to Limitorque Modutronic 10A and 10B

8.	Closing time:

a.	Gate shall be 12 inch per minute, minimum 1 minute

b.	Globe shall be 4 inch per minute, minimum 1 minute

c.	Butterfly shall be 1/4 turn per minute.

9.	Provide remote open-close buttons and open-close indicating lights for installation on control board in Section "Automatic Controls System"

10.	Final field adjustment of valve operation shall be made by manufacturer's representative

8)	STRAINERS

A.	Provide screwed ends to 2 inch and flanged 2-1/2 inch and larger with body as follows

1.	To 100 psig: 125 lb wsp class, cast iron.

2.	100 psig to 250 psig: 250 lb wsp class, cast iron.

3.	Over 250 psig: 300 lb wsp class, forged steel or cast steel

4.	Medium and high temperature water system: 300 lb wsp class, forged steel or cast steel

B.	Screen: Provide 316 stainless steel or monel screens with free area not less than 2-1/2 times inlet area with perforations as follows

1.	Water:

a.	to 8 inch: 1/8 inch.

b.	10 inch and larger: 5/32 inch.

2.	Steam and condensate:

a.	To 2 inch: 1/64 inch.

b.	2-1/2 inch to 4 inch: 1/32 inch.

c.	5 inch and up: 3/64 inch.

3.	Construction: Provide reinforced screen wire gauge to suit size and service

4.	Provide magnets except for handwheel operated type. Provide water strainers

a.	All 8 inch and larger.

b.	Each pump suction.

c.	Provide continuous magnetic field around entire circumference of screen

d.	Provide removable cast Alnico No. 5 channel magnets or acceptable baskets constructed of magnetic alloy

e.	Secure magnets with stainless steel retaining lugs and threaded rods

C.	Y-type: Provide screwed with faced cap, straight thread and gasket, similar to Mueller Steam Specialty Muessco No. 11. Provide flanged with bolted cover, similar to Mueller Steam Specialty Muessco No. 751 or No. 752

D.	Provide basket type with bolted cover, bottom drain connection, similar to Mueller Steam Specialty Muessco No. 165

E.	Provide duplex type for fuel oil, diesel oil and condenser water, as follows

1.	To 6 inch IPS:

a.	Cast iron body basket strainer.

b.	Bolted cover and bronze plug valve.

c.	Similar to Zurn Series 560FBS.

5

(A)	inch and larger.

d.	Gate type, iron body.

e.	Monel basket.

f.	Integral mechanism to permit servicing without interrupting flow, similar to Zurn Series 570

NOTE: INTENDED FOR CONDENSER WATER FROM COOLING TOWERS, LAKES AND STREAMS, CHILLED WATER AND SIMILAR APPLICATIONS REQUIRING PERIODIC STRAINER CLEANING. (HANDWHEEL OPERATED TYPE IS MORE ECONOMICAL THAN THE DUPLEX TYPE BUT REQUIRES SYSTEM SHUTDOWN TO REPLACE INTERNAL PARTS.

F.	Provide handwheel operated type, similar to Hellan Fluid Strainer (Eaton, Yale Towne, Inc.) with twin screens and as follows

NOTE: INSERT TERMINATION POINT. DISCHARGE CAN BE DIRECTED INTO WASTE RECEPTACLE OR SUMP, DEPENDING ON DEBRIS OR SOLID MATTER

1.	Valved sump outlet piped to spill into ----- and cleaning of screens possible by rotating handwheels without disassembly or interrupting flow

NOTE: SUCTION DIFFUSER IS SYSTEM-TO-PUMP ANGLE CONNECTOR PROVIDING SHORT RADIUS ELBOW FOR TIGHT SPACE CONDITIONS WITH EXCELLENT FLOW CHARACTERISTICS COMPARABLE TO LONG RADIUS ELBOW AND STRAINER SETUP. COST COMPARABLE TO CONVENTIONAL SETUP SUITABLE FOR 125 LB WSP. SEE MANUFACTURER'S CATALOG FOR FURTHER DATA

9)	PUMP SUCTION DIFFUSER

A.	Provide diffuser flanged with 125 lb wsp class, cast iron body and inlet vanes and orifice cylinder as follows

B.	Inlet vanes shall be:

STEEL

1.	Steel.

2.	Stainless steel.

STEEL

C.	Orifice cylinder shall be:

STA

1.	Steel.

2.	Stainless steel.

STA

D.	Provide diffuser similar to Bell & Gossett with 16 mesh bronze start up strainer and magnetic separator

10)	SLEEVES

A.	Provide cast iron or steel with or without welded center flange as noted

B.	Provide No. 20 USSG galvanized iron.

C.	Provide cast iron flashing, type S with integral center flashing flange, and clamping ring

D.	Extended sleeves shall be similar to Josam No. 1880.

1.	Flush sleeves shall be similar to Josam No. 1870.

2.	Provide galvanized cast iron flashing type for Dex-O-Tex type waterproofing with integral bottom, flanged, similar to Smith DX-935

NOTE: INDICATE ON DRAWINGS EXPANSION AND LATERAL REQUIREMENTS IN A SCHEDULE AND INCLUDE PRESSURE AND TEMPERATURE OF SERVICE. NOTE ALSO DOUBLE END AS EXCEPTION TO SINGLE END SPECIFIED HEREIN. AVOID PACKED TYPE FOR EXHAUST GAS APPLICATIONS. ACCESS DOORS MUST bE PROVIDED FOR ALL EXPANSION JOINTS IN CONCEALED AREAS. SPECIFY PACKED TYPE WHERE HIGHER SERVICE TEMPERATURES ARE ENCOUNTERED. ALTHOUGH MORE EXPENSIVE, IT HAS A LONGER SERVICE LIFE IN GENERAL THAN THE BELLOWS TYPE AND IS NOT SUBJECT TO SUDDEN RUPTURE, BUT REQUIRES MAINTENANCE SERVICING (PERIODIC REPACKING AND LUBRICATION). FOR SERVICE LIMITATIONS OF EACH TYPE, REFER TO MANUFACTURER'S CATALOGS

11)	EXPANSION JOINTS

A.	Provide packless type, similar to Adsco Corruflex, 3 inch and larger, suitable for pressure and service with the following

1.	Single end, except as noted.

2.	Self-equalizing with reinforcing rings.

3.	Internal sleeve.

4.	Flanged ends.

5.	Limit stops.

6.	Corrugated expansion element:

a.	Hydraulically formed.

b.	Stainless steel.

B.	Provide packless type, to 2-1/2 inch, similar to Adsco High Pressure Compensator with the following

1.	Multiple stainless steel bellows.

2.	Flanged or union ends.

3.	Internally guided.

4.	Anti-torque device.

C.	Packed type: Provide single or double slip, with anchor base except as noted. Provide internal and external guides integral with stuffing box; wrought steel with chromium plating applied directly to polished steel surface. Provide butt weld ends, except as noted

NOTE: WHERE OWNER DESIRES ANSI FORGED STEEL FLANGED ENDS AND IS WILLING TO PAY HIGHER COST, REVIEW WITH DEPT. CHIEF ENGINEER

1.	Provide limit stops, capable of holding against full internal thrust

2.	Packing: Provide self-lubricating non-asbestos reinforced teflon type, which can be injected under full line pressure, contained by minimum of 3 teflon non-asbestos rings at each side

NOTE: WHERE SERVICE TEMPERATURE IS ABOVE 550 DEG F OR WHERE OWNER DESIRES 5 YEAR LEAK-FREE WARANTEES, SPECIFY ASBESTOS-FREE GRAPHITE PACKING

3.	Provide joints body weldable quality carbon steel, ASTM A 53 grade "B" seamless pipe

4.	Slip requirements: Provide ASTM A 53 grade "B" seamless pipe up to and including 12 inch: Schedule 80 and 16 inch thru 24 inch: Schedule 60

a.	Provide wall thickness after machining not reduced more than 1/8 inch

b.	Provide double layer of chrome plating with minimum thickness 0.001 inch each after buffing: First crack-free hard chrome; second standard hard chrome

5.	Provide welded steel packing cylinder with internal acme thread and male threaded plunger with cylinder welded directly to stuffing box. Minmum number of packing cylinders as follows = = Expansion Number of = Joint Size Packing = Cylinders = 1-1/2 inch thru 4 inch 1 = 5 inch & 6 inch 3 = 8 inch and 10 inch 4 = 12 inch and 14 inch 5 = 16 inch and 18 inch 6 = 20 inch and 24 inch 8 =

6.	Pressure ratings:

PRESS

a.	High pressure steam, high pressure condensate, high temperature water: 150 lb

b.	High pressure steam, high pressure condensate, high temperature water: 300 lb

c.	High pressure steam, high pressure condensate, high temperature water: 400 lb

PRESS

PRESS1

d.	Pumped condensate return: 150 lb.

e.	Pumped condensate return: 300 lb.

PRESS1

7.	Provide all welding in accordance with Section IX of ASME Boiler and Pressure Vessel Code

8.	All welds for 300 lb. and 400 lb. joints shall be subjected to complete radiographic examination. No liquid or dye penetrant indication will be acceptable. Examination shall be as per requirements of Section V of ASME Boiler and Pressure Vessel Code

9.	Provide joints similar to Advanced Thermal Systems, Inc. Thermal Pak-Type TP2, ADSCO Manufacturing Corp. Type RJ or Yarway Corp. Gun-Pakt

D.	Provide ball joints, similar to Barco Type N with flanged ends and steel body 250 psig suitable to 525 deg F service temperature and capable of 360 deg rotation and minimum of 15 deg angular flexing movement

12)	HANGERS, SUPPORTS, GUIDES AND ANCHORS

A.	Provide as noted in Subsection Installation.

13)	ESCUTCHEONS

A.	Provide stamped sheet metal with satin finish chromium plating over copper and deep type to cover projecting sleeves

B.	For flush fit, use set screws on bare pipe and internal spring on covered pipe

14)	PRESSURE RELIEF VALVES FOR STEAM PIPING SYSTEMS

A.	Refer to Section STEAM SYSTEM.

Part 3 -	EXECUTION

1)	INSTALLATION

A.	Piping: Install piping approximately as indicated and modify to suit building conditions, to avoid interference with other trades and to maintain access and clearance and to maintain pitch

1.	Where modifications are required, provide offsets, drains, vents, valves and required pipe and fittings

2.	Connect equipment in accordance with each manufacturer's standard details and recommendations, as approved, except as noted, with accessory piping, vents, drains, reliefs and by-passes

3.	Install piping parallel with or at right angle to walls and other piping, neatly spaced and with plumb risers

4.	Maintain maximum headroom and ceiling height, offset as necessary and coordinate with work of other trades

5.	Maintain minimum 1 inch clearance from adjacent work, including insulation, except as noted or approved

6.	Install no piping in elevator machine rooms, electric rooms and closets and telephone rooms and closets

7.	Install valves to be accessible, but install no valve handles pointing down below horizontal position. Install valves to be removable without separating or lifting piping in which installed. On threaded bodies provide cap screws. Where abutting flanged strainers or similar devices, position valve with respect to device so as to permit removal of bolts

8.	Provide reducing fittings for changes in pipe sizes. Bushings will not be permitted

9.	Provide extra heavy pipe for nipples where unthreaded portions of pipe is less than 1-1/2 inch long. Close nipples not permitted

10.	Provide screwed piping with clean threads, cut to exact length and ream after cutting and threading. Apply acceptable compound or teflon tape thread sealant on male threads only. No lamp wick in joints

11.	Pitch, except as noted:

a.	Steam and condensate: 1 inch in 40 feet down in direction of flow

b.	Steam riser branches and undripped connections: 1 inch in 10 feet, up in direction of steam flow

c.	Water piping:

(1)	Up to 1 inch pipe: 1 inch in 40 feet.

(2)	1-1/4 inch and larger: 1 inch in 100 feet.

d.	Condensation drainage:

(1)	1/4 inch per foot preferred.

(2)	1/8 inch per foot minimum.

12.	Drain connection at low points in water piping and where noted

a.	In equipment rooms:

(1)	To 3 inch pipe: 3/4 inch gate valve.

(2)	4 inch to 8 inch: 1-1/2 inch gate valve.

(3)	10 inch and larger: 2-1/2 inch gate valve.

b.	Except in equipment rooms: 1/2 inch drain valve with capped hose connection

13.	Install Manual Air Vents at high points and where water flow direction changes from horizontal to downward

a.	To 3 inch pipe: Line size air chamber, 12 inch long, 1/2 inch globe valve

b.	4 inch to 8 inch: Line size air chamber, 6 inch long, 1/2 inch globe valve

c.	10 inch and larger: Line size pipe cap, 1/2 inch globe valve

d.	For medium and high temperature water systems use same as above with two 1/2 inch globe valves in series

14.	Provide Automatic Air Vents where indicated.

15.	Close open ends of pipes during construction to prevent entry of debris

B.	Hangers, supports and guides:

1.	Assure adequate support for pipe and contents.

2.	Prevent vibration or swaying.

3.	Provide for expansion and contraction.

4.	Supports of wire, rope, wood, chain, strap perforated bar or any other makeshift device will not be permitted

5.	Support piping independently so that equipment is not stressed by piping weight or expansion

6.	Refer to Section VIBRATION ISOLATION for hangers, guides, anchors and supports requiring vibration isolation units

7.	For uninsulated copper pipe or tubing, use clamps and supports, with electroplated copper finish

8.	Uncoated hangers, rods and supports: dip in zinc chromate primer before installation

9.	Maximum spacing for horizontal piping:

a.	Steel 1 inch and smaller: 6 feet.

b.	Steel 1-1/4 inch and larger: 10 feet.

c.	Brass or copper 3 inch and smaller: 7 feet.

d.	Brass or copper 4 inch and larger: 10 feet.

e.	Provide additional supports at changes in direction, branch piping and runouts over 5 feet and concentrated loads due to valves, strainers and other similar items

10.	Provide Type for horizontal piping, except as noted.

a.	Provide forged steel adjustable clevis type, rod support for all services except services operating above 250 deg F

b.	Rollers or slide bases: Provide pipe stand, bracket, trapeze or other equivalent structural support for the following services for piping 2 inch and larger: High pressure steam and condensate return and medium pressure steam and condensate return

c.	For pipe and covering, provide saddles for rollers or slide bases and protective shields or saddles for all other type supports

d.	Provide threaded steel rods:

(1)	2 inch vertical adjustment with 2 nuts each end for positioning and locking

(2)	Size to 12 inch IPS: = = Pipe, IPS Rod = To 2 inch 3/8 inch = 2-1/2 inch and 3 inch 1/2 inch = 4 inch 5/8 inch = 6 inch and 8 inch 3/4 inch = 10 inch and 12 inch 7/8 inch =

(3)	Size above 12 inch IPS and multiple pipe standards: safety factor of 5 on ultimate strength on area

(4)	For double rod hangers use 1 size smaller than above

(5)	Connection to structure for piping to 2 inch: use concrete inserts or expansion shields in shear into sides of beams

(6)	Connection to structure for piping 2-1/2 inch and larger: use concrete inserts, beam clamps or suitable bridging

11.	Vertical piping:

a.	Base elbow support: Provide bearing plate on structural support, similar to F&S Manafacturing Corp. Fig. 720 or 721

b.	Provide guides at every third floor but not to exceed

(1)	25 feet for piping to 2 inch.

(2)	36 feet for piping 2-1/2 inch to 12 inch.

(3)	50 feet for piping 14 inch and larger.

c.	Top support: Provide special hanger or saddle in horizontal connection and make provisions for expansion

d.	Intermediate supports: Steel pipe clamp at floor. Bolt and weld to pipe with extension ends bearing on structural steel or bearing plates

e.	For multiple pipes, coordinate guides, bearing plates and accessory steel

12.	Insulated piping: Provide horizontal pipe shields at supports

a.	Minimum 120 deg arc and length equal to diameter of insulation, 12 inch minimum

b.	To 6 inch pipe size: No. 18 USSG galvanized steel and 8 inch and larger: No. 14 USSG galvanized steel

c.	Provide vertical pipe shields at guides.

(1)	Full 360 deg arc, securely banded and length equal to diameter of insulation, 12 inch minimum

(2)	To 6 inch pipe size: No. 18 USSG galvanized steel and 8 inch and larger: No. 14 USSG galvanized steel

C.	Connections to apparatus:

1.	Final connections to apparatus, equipment, steam traps, automatic control valves, pressure reducing valves: Provide unions or flanges between shutoff valve and connection

a.	Screwed piping to 2 inch: Unions.

b.	Other piping: Flanges.

2.	Provide flanged connections to heads of heat exchangers, convertors, chillers, condensers and locate flanges adjacent to equipment connections and to clear tube pull to avoid dismantling of extensive piping for pulling out tube bundle

D.	Expansion: Install piping to permit free expansion and contraction without damaging piping or construction

1.	Provide offsets, expansion loops, anchors, guides and supports to permit expansion, within stress limits of ANSI Code for Pressure Piping for temperature range of 40 deg F to minimum of 20 deg F above maximum system temperature

2.	Steam piping and medium and high temperature water pipings shall be cold-sprung

a.	Piping up to 1-1/2 inch: Cold-sprung 100 percent of expansion

b.	Piping 2 inch and larger: Cold-sprung 50 percent of expansion

3.	Where pipe loops or changes in direction of piping cannot be employed to absorb expansion and contraction, provide expanion joints. Install anchors and guides on both sides of expansion joint in accordance with manufacturers specification, to provide safe installation and trouble-free operation

E.	Fittings: For changes in pipe size, utilize bushings only where noted and specially permitted and utilize reducers, except as noted, on horizontal and vertical piping

1.	Horizontal water systems: eccentric, flat on top for venting

2.	Horizontal steam and condensate system: eccentric, flat on bottom for drainage

3.	Vertical piping: Concentric, if no more than 2 pipe sizes

4.	Elbows: Provide long radius elbows, except where space conditions do not permit. At pump inlet, provide long radius base supported or pump suction diffuser. At pump discharge, provide long radius base supported elbow

5.	Screwed joints: Cut pipe ends square and clean and thread to correct length

a.	To 1-1/2 inch pipe: 1-1/2 exposed threads when made up tight

b.	2 inch to 6 inch: 2 exposed threads.

5

(A)	inch and larger: 2-1/2 exposed threads.

c.	Ream after threading. Use joint compound or teflon tape thread sealant on male thread only. Apply graphite to threads of drain plugs

6.	Nipples: Use close type only where specially permitted and shoulder type of extra heavy pipe where less than 1-1/2 inch is unthreaded

F.	Welding: Before proceeding, submit the following for review and approval

1.	Proposed procedures conforming to latest revision of:

a.	ANSI B31.1, Code for Pressure Piping, Chapter V.

b.	ANSI Z49.1, Safety in Welding and Cutting.

c.	API code for fuel and other API governed piping.

2.	List of welders qualified per Section IX of ASME, Boiler and Pressure Vessel Code

3.	Field procedures: Clean pipe free from rust, scale and oxide. Bevel pipe on each end per acceptable procedures. Provide backing rings on steam and hot water over 100 psig. Utilize mitered pipe and field fabricated fittings only where noted and where specially permitted. Hammer clean and flush out piping after welding to remove scale, welding slag and other debris

G.	Valves: Provide valves as noted. Provide shutoff valves on inlets and outlets of equipment, on branch connections to mains and as noted. Provide silent check valves on pump discharges and provide other types at locations as noted

H.	Motorized valve operators: Provide as noted.

I.	Strainers: Provide as noted.

1.	Valved for blow-off with nipple and cap.

2.	Provide line size, except as noted.

3.	Locate upstream of pumps, automatic control valves, drip traps, pressure reducing valves and other equipment as noted

J.	Sleeves: Provide for piping through walls, floors and partitions

1.	Type: Provide cast iron flashing type:

a.	Membrane waterproofed walls and floors.

b.	Adjust to construction with galvanized pipe nipples extending 2 inches above finished floor and flush with walls and ceilings

c.	Extend lead flashing extending 10 inches beyond clamping device

d.	Provide galvanized steel pipe:

(1)	Integral waterproofed walls and floors:

(a)	Welded center flange, buried.

(b)	Extending 2 inch above finished floor.

(c)	1/2 inch projection beyond walls.

(d)	Caulked watertight.

(2)	Concrete floors and masonry walls:

(a)	2 inch above finished floor.

(b)	Flush with ceiling.

(c)	1/2 inch projection beyond walls.

e.	Provide galvanized sheet metal: For locations except where other type sleeves are specified shall be not less than No. 22 USSG except sleeves for piping 4 inch and larger, use No. 18 USSG. For piping run in floor fill, provide No. 22 USSG galvanized sheet metal, U-shaped covers with clearance for expansion

2.	Size: For bare pipe, provide sleeve a minimum 1/2 inch larger than pipe and pass fittings as required. For insulated pipe, except as noted, provide flashing sleeve the same as for bare pipe and provide pipe or sheet metal sleeve 1/2 inch larger than covering

3.	Caulking: Seal openings between sleeves and pipe or pipe insulation. Provide depth of caulking the full length of sleeve

a.	Material for fire barrier: provide mineral wool or equivalent non-asbestos, non-combustible material

b.	For acoustical barrier, refer to Section "NOISE CONTROL"

c.	Utilize the following for sleeves through waterproofed construction

(1)	Interior: non-asbestos ceramic fiber packing and hot poured mastic

(2)	Exterior: non-asbestos ceramic fiber packing and caulking lead

K.	Escutcheons: Provide at surfaces where exposed piping penetrates walls, ceilings, floors or partitions and at fire barrier caulking

2)	ADJUSTMENT AND CLEANING

NOTE: WHERE OWNER IS WILLING TO PAY HIGHER COST, CONSIDER SPECIFYING HIGH VELOCITY JET MOLE CLEANING OF PIPING SYSTEMS TO AVOID RISK OF OBSTRUCTIONS IN PIPING. REVIEW WITH DEPT. CHIEF ENGINEER

A.	Cleaning.

1.	During construction, prevent entry of foreign matter, clean pipe, fittings and valves internally and hammer welds to remove slag and weld beads. Flush piping system with clear water prior to connection to coils, control valves, and equipment. Install temporary bypass piping around coils, control valves and equipment where piping system is hot flushed prior to connection

2.	After erection, flush with clear water and seal ends after cleaning

3.	Water systems:

a.	Upon start-up fill with clean water, add alkaline detergent, as follows

(1)	Sodium silicate and/or sodium phosphate with nonfoaming wetting agent

(2)	Phenolphthalein alkalinity to 2000 to 5000 ppm as CaCO/3, supplied and supervised by water treatment company. Refer to Section: WATER TREATMENT

b.	Temporary equipment for condenser water system: Remove straightening vanes and metering orifices from condenser water piping system and replace after cleaning

(1)	Place temporary flat screen type strainer in each cooling tower cell inlet during cleaning period and remove after cleaning period

c.	Circulate water of each system at respective design flow rates

(1)	Three 8-hour days.

(2)	At end of each 8-hour period, remove and clean strainers and blow off low points

d.	After third day of pumping, completely drain out entire systems of cleaning solution and clean out cooling tower basins and hose down

e.	Refill systems with clean water and circulate for an additional 8-hour period and at the end of that interval, completely drain systems

f.	Drain, refill with clear water and circulate.

g.	Test for alkalinity, not more than 200 ppm in excess of alkalinity of rinsing water

h.	Repeat (Circulation of water of each system at respective design flow rates minimum) as described above, until 200 ppm or less, are maintained for 10 days

i.	Protect against damage from freezeup or discharge of water

j.	Equipment by-passing:

(1)	Remove or by-pass control valves, coil and all equipment subject to damage from high alkalinity

(2)	Provide for all sub mains to by-pass:

(a)	Induction units.

(b)	Fan coil units.

(c)	Unit ventilators.

(d)	Cabinet heaters.

(3)	Provide by-passing between supply and return risers to avoid flushing water coils or control valves

4.	Steam and condensate systems: Perform the same procedures as for water systems except, prior to cleaning, remove traps and provide temporary spool piece. Blow down system with steam after water cleaning and before traps are reinstalled

NOTE: 1. BALANCING OF WATER SYSTEMS PERTAINS ONLY TO CONSTANT VOLUME FLOW SYSTEMS. VARIABLE VOLUME FLOW SYSTEM ARE SELF BALANCING THROUGH THEIR CONTROL VALVES AND CANNOT BE BALANCED FROM THE OUTSIDE. FOR VARIABLE VOLUME FLOW SYSTEMS, PARAGRAPH B MUST BE OMITTED IN ITS ENTIRETY 2. IF BUDGET PERMITS, CONSIDER INDEPENDENT BALANCING AGENCY (ASSOCIATED AIR BALANCE COUNCIL) FOR BALANCING WATER SYSTEMS. REVIEW WITH DEPT. CHIEF ENGINEER

B.	Balancing and adjusting water systems: Refer to Section BALANCING AIR AND WATER SYSTEMS

1.	Balance and adjust water systems to provide required quantity to or through each component

2.	Examine systems and position valves and cocks in open position, as required

a.	Position automatic control valves for full flow through the heat transfer equipment of the system during the balancing

b.	Maintain moving equipment lubricated and strainers clean and perform other maintenance and inspection tasks for proper system operation

3.	Make adjustments required to balance systems. Adjust balancing valves and cocks to satisfaction of Architect and/or Engineer

4.	Mark valve tag of each valve or cock used for balancing to indicate position of valve stem

5.	Pumps: Demonstrate performance as noted.

6.	Test reports: Submit in bound folder with accompanying sketches

a.	Report forms: Submit apparatus tests, similar to forms specified in Section SHEET METAL WORK

(1)	Submit distribution tests, similar to outlet test report forms specified in Section SHEET METAL WORK

b.	Additional report information: Submit method of balancing and details of instruments used and submit copies of readings with piping layout showing where readings were taken

3)	FIELD QUALITY CONTROL.

A.	Tests

1.	Provide materials, equipment, labor and power as required to perform tests per approved schedule and project requirements

NOTE: FOR NYC PROJECTS CHECK LOCAL CODES FOR

2.	Retain the services of an independent qualified inspector to visually inspect welds in conformance with ANSI B31

3.	Piping systems: Less than 100 psig operating pressure, test hydrostatically to 150 psig. Over 100 psig operating pressure, test hydrostatically to 1-1/2 times operating pressure but never exceed test pressure as per ANSI B16.1 basis

4.	Duration: Test for 2 hours with system valves capped and pressure apparatus disconnected

PRESS

a.	Pressure change: none.

b.	Pressure change: as noted.

PRESS

c.	Compensate for temperature change.

5.	Repair or replace leaks and defects as directed without additional cost