SECTION 15145 DOMESTIC WATER PIPING SPECIALTIES

PART 1 - GENERAL

1.1

RELATED DOCUMENTS A.

1.2

Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

SUMMARY A.

This Section includes the following domestic water piping specialties: 1. 2.

B.

Related Sections include the following: 1.

1.3

Backflow preventers. Trap-seal primer systems.

Division 15 Section "Meters and Gages" for thermometers, pressure gages, and flow meters in domestic water piping.

PERFORMANCE REQUIREMENTS A.

1.4

Minimum Working Pressure for Domestic Water Piping Specialties: 125 psig unless otherwise indicated.

SUBMITTALS A.

Product Data: For each type of product indicated.

B.

Shop Drawings: Diagram power, signal, and control wiring.

C.

Field quality-control test reports.

D.

Operation and Maintenance Data: For domestic water piping specialties to include in emergency, operation, and maintenance manuals.

1.5

QUALITY ASSURANCE A.

Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

B.

NSF Compliance: 1. 2.

Comply with NSF 14, "Plastics Piping Components and Related Materials," for plastic domestic water piping components. Comply with NSF 61, "Drinking Water System Components - Health Effects; Sections 1 through 9."

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PART 2 - PRODUCTS

2.1

VACUUM BREAKERS A.

Pipe-Applied, Atmospheric-Type Vacuum Breakers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h.

2. 3. 4. 5. 6. B.

Standard: ASSE 1001. Size: NPS 1/4 to NPS 3, as required to match connected piping. Body: Bronze. Inlet and Outlet Connections: Threaded. Finish: Chrome plated.

Hose-Connection Vacuum Breakers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h. i. j.

2. 3. 4. 5. C.

Ames Co. Cash Acme. Conbraco Industries, Inc. FEBCO; SPX Valves & Controls. Rain Bird Corporation. Toro Company (The); Irrigation Div. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Arrowhead Brass Products, Inc. Cash Acme. Conbraco Industries, Inc. Legend Valve. MIFAB, Inc. Prier Products, Inc. Watts Industries, Inc.; Water Products Div. Woodford Manufacturing Company. Zurn Plumbing Products Group; Light Commercial Operation. Zurn Plumbing Products Group; Wilkins Div.

Standard: ASSE 1011. Body: Bronze, nonremovable, with manual drain. Outlet Connection: Garden-hose threaded complying with ASME B1.20.7. Finish: Chrome or nickel plated.

Pressure Vacuum Breakers: 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g.

Ames Co. Conbraco Industries, Inc. FEBCO; SPX Valves & Controls. Flomatic Corporation. Toro Company (The); Irrigation Div. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

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2. 3. 4. 5.

Standard: ASSE 1020. Operation: Continuous-pressure applications. Pressure Loss: 5 psig maximum, through middle 1/3 of flow range. Accessories: a.

D.

Spill-Resistant Vacuum Breakers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b.

2. 3. 4. 5.

Conbraco Industries, Inc. Watts Industries, Inc.; Water Products Div.

Standard: ASSE 1056. Operation: Continuous-pressure applications. Size: NPS 1/4NPS as indicated. Accessories: a.

2.2

Valves: Ball type, on inlet and outlet.

Valves: Ball type, on inlet and outlet.

BACKFLOW PREVENTERS A.

Reduced-Pressure-Principle Backflow Preventers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f.

2. 3. 4. 5.

6. 7.

Standard: ASSE 1013. Operation: Continuous-pressure applications. Pressure Loss: 12 psig maximum, through middle 1/3 of flow range. Body: Bronze for NPS 2 and smaller; cast iron with interior lining complying with AWWA C550 or that is FDA approved, steel with interior lining complying with AWWA C550 or that is FDA approved, or stainless steel for NPS 2-1/2 and larger. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger. Accessories: a.

b. B.

Ames Co. Conbraco Industries, Inc. FEBCO; SPX Valves & Controls. Flomatic Corporation. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Valves: Ball type with threaded ends on inlet and outlet of NPS 2 and smaller; outside screw and yoke gate-type with flanged ends on inlet and outlet of NPS 21/2 and larger. Air-Gap Fitting: ASME A112.1.2, matching backflow-preventer connection.

Double-Check Backflow-Prevention Assemblies: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b.

Ames Co. Conbraco Industries, Inc.

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c. d. e. f. 2. 3. 4. 5.

6. 7.

Standard: ASSE 1015. Operation: Continuous-pressure applications, unless otherwise indicated. Pressure Loss: 5 psig maximum, through middle 1/3 of flow range. Body: Bronze for NPS 2 and smaller; cast iron with interior lining complying with AWWA C550 or that is FDA approved, steel with interior lining complying with AWWA C550 or that is FDA approved or stainless steel for NPS 2-1/2 and larger. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger. Accessories: a.

C.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c.

2. 3. 4. 5. 6.

Conbraco Industries, Inc. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Standard: ASSE 1022. Operation: Continuous-pressure applications. Size: NPS 1/4 or NPS 3/8. Body: Stainless steel. End Connections: Threaded.

Dual-Check-Valve Backflow Preventers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h. i. j. k.

2. 3. 4. 5. E.

Valves: Ball type with threaded ends on inlet and outlet ofNPS 2 and smaller; outside screw and yoke gate-type with flanged ends on inlet and outlet of NPS 21/2 and larger.

Beverage-Dispensing-Equipment Backflow Preventers: 1.

D.

FEBCO; SPX Valves & Controls. Flomatic Corporation. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Cash Acme. Conbraco Industries, Inc. FEBCO; SPX Valves & Controls. Flomatic Corporation. Ford Meter Box Company, Inc. (The). Honeywell Water Controls. Legend Valve. McDonald, A. Y. Mfg. Co. Mueller Co.; Water Products Div. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Standard: ASSE 1024. Operation: Continuous-pressure applications. Size: NPS ½. Body: Bronze with union inlet.

Carbonated-Beverage-Dispenser, Dual-Check-Valve Backflow Preventers: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following:

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a. b. c. 2. 3. 4. 5. 6. F.

Standard: ASSE 1032. Operation: Continuous-pressure applications. Size: NPS 1/4 or NPS 3/8. Body: Stainless steel. End Connections: Threaded.

Backflow-Preventer Test Kits: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e.

2.

2.3

Cash Acme. Lancer Corporation. Watts Industries, Inc.; Water Products Div.

Conbraco Industries, Inc. FEBCO; SPX Valves & Controls. Flomatic Corporation. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Description: Factory calibrated, with gages, fittings, hoses, and carrying case with testprocedure instructions.

WATER PRESSURE-REDUCING VALVES A.

Water Regulators: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e.

2. 3. 4.

5. 6. B.

Cash Acme. Conbraco Industries, Inc. Honeywell Water Controls. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Standard: ASSE 1003. Pressure Rating: Initial working pressure of 150 psig. Body: Bronze, provide chrome-plated finish if connected to chrome plated or stainless steel piping for NPS 2 and smaller; cast iron with interior lining complying with AWWA C550 or that is FDA approved for NPS 2-1/2 and NPS 3. Valves for Booster Heater Water Supply: Include integral bypass. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and NPS 3.

Water Control Valves: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f.

CLA-VAL Automatic Control Valves. Flomatic Corporation. OCV Control Valves. Watts Industries, Inc.; Ames Fluid Control Systems. Watts Industries, Inc.; Watts ACV. Zurn Plumbing Products Group; Wilkins Div.

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2. 3.

4. 5.

2.4

Description: Pilot-operation, diaphragm-type, single-seated main water control valve. Pressure Rating: Initial working pressure of 150 psig minimum with AWWA C550 or FDA-approved, interior epoxy coating. Include small pilot-control valve, restrictor device, specialty fittings, and sensor piping. Main Valve Body: Cast- or ductile-iron body with AWWA C550 or FDA-approved, interior epoxy coating; or stainless-steel body. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger.

BALANCING VALVES A.

Copper-Alloy Calibrated Balancing Valves: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g.

2. 3. 4. 5. B.

2.5

Armstrong International, Inc. Flo Fab Inc. ITT Industries; Bell & Gossett Div. NIBCO INC. TAC Americas. Taco, Inc. Watts Industries, Inc.; Water Products Div.

Type: Ball valve with two readout ports and memory setting indicator. Body: Brass or bronze, Size: Same as connected piping, but not larger than NPS 2. Accessories: Meter hoses, fittings, valves, differential pressure meter, and carrying case.

Accessories: Meter hoses, fittings, valves, differential pressure meter, and carrying case.

TEMPERATURE-ACTUATED WATER MIXING VALVES A.

Individual-Fixture, Water Tempering: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h.

2. 3. 4. 5. 6. 7.

Cash Acme. Conbraco Industries, Inc. Honeywell Water Controls. Lawler Manufacturing Company, Inc. Leonard Valve Company. Powers; a Watts Industries Co. Watts Industries, Inc.; Water Products Div. Zurn Plumbing Products Group; Wilkins Div.

Standard: ASSE 1016, thermostatically controlled water tempering valve. Pressure Rating: 125 psig minimum, unless otherwise indicated. Body: Bronze body with corrosion-resistant interior components. Temperature Control: Adjustable. Inlets and Outlet: Threaded. Finish: Rough or chrome-plated bronze.

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2.6

STRAINERS FOR DOMESTIC WATER PIPING A.

Y-Pattern Strainers: 1. 2. 3. 4. 5.

Pressure Rating: 125 psig minimum, unless otherwise indicated. Body: Bronze for NPS 2 and smaller; cast iron with interior lining complying with AWWA C550 or FDA-approved, epoxy coating and for NPS 2-1/2 and larger. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger. Screen: Stainless steel with round perforations, unless otherwise indicated. Perforation Size: a. b. c.

6.

2.7

StrainersNPS 2 and Smaller: 0.020 inch. Strainers NPS 2-1/2 to NPS 4: 0.045 inch. Strainers NPS 5 and Larger: 0.10 inch

Drain: Factory-installed, hose-end drain valve.

OUTLET BOXES A.

Clothes Washer Outlet Boxes WB-1: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h. i. j.

2. 3. 4. 5. 6. 7. 8. 9.

B.

Acorn Engineering Company. Guy Gray Manufacturing Co., Inc. IPS Corporation. LSP Products Group, Inc. Oatey. Plastic Oddities; a division of Diverse Corporate Technologies. Symmons Industries, Inc. Watts Industries, Inc.; Water Products Div. Whitehall Manufacturing; a div. of Acorn Engineering Company. Zurn Plumbing Products Group; Light Commercial Operation.

Mounting: Recessed. Material and Finish: Plastic or Stainless-steel] box and faceplate. Faucet: Combination, valved fitting complying with ASME A112.18.1. Include gardenhose thread complying with ASME B1.20.7 on outlets. Supply Shutoff Fittings: NPS 1/2 ball valves and NPS 1/2 copper, water tubing. Drain: NPS 2 standpipe and P-trap for direct waste connection to drainage piping. Water Hammer Arrestors: Standard: ASSE 1010. Inlet Hoses: Two 60-inch- long, rubber household clothes washer inlet hoses with female, garden-hose-thread couplings. Include rubber washers. Drain Hose: One 48-inch- long, rubber household clothes washer drain hose with hooked end.

Icemaker Outlet Boxes: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e.

Acorn Engineering Company. IPS Corporation. LSP Products Group, Inc. Oatey. Plastic Oddities; a division of Diverse Corporate Technologies.

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2. 3. 4. 5. 6.

2.8

Mounting: Recessed. Material and Finish: Plastic or Stainless-steel box and faceplate. Faucet: Valved fitting complying with ASME A112.18.1. Include NPS 1/2 or smaller copper tube outlet. Supply Shutoff Fitting: NPS 1/2 gate, globe, or ball valve and NPS 1/2 copper, water tubing. Water Hammer Arrestor: Standard: ASSE 1010.

HOSE BIBBS A.

Hose Bibbs HB-1: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.

2.9

Standard: ASME A112.18.1 for sediment faucets. Body Material: Bronze. Seat: Bronze, replaceable. Supply Connections: NPS 1/2 or NPS 3/4 threaded or solder-joint inlet. Outlet Connection: Garden-hose thread complying with ASME B1.20.7. Pressure Rating: 125 psig. Vacuum Breaker: Integral or field-installation, nonremovable, drainable, hose-connection vacuum breaker complying with ASSE 1011. Finish for Equipment Rooms: Rough bronze, or chrome or nickel plated. Finish for Service Areas: Rough bronze, Chrome or nickel plated. Finish for Finished Rooms: Chrome or nickel plated. Operation for Equipment Rooms: Wheel handle or operating key. Operation for Service Areas: Wheel handle. Operation for Finished Rooms: Operating key. Include operating key with each operating-key hose bibb. Include wall flange with each chrome- or nickel-plated hose bibb.

WALL HYDRANTS A.

Nonfreeze Wall Hydrants NFH-1: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h. i.

2. 3. 4. 5. 6. 7. 8. 9.

Josam Company. MIFAB, Inc. Prier Products, Inc. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc. Tyler Pipe; Wade Div. Watts Drainage Products Inc. Woodford Manufacturing Company. Zurn Plumbing Products Group; Light Commercial Operation. Zurn Plumbing Products Group; Specification Drainage Operation.

Standard: ASME A112.21.3M for concealed exposed-outlet, self-draining wall hydrants. Pressure Rating: 125 psig. Operation: Loose key. Casing and Operating Rod: Of length required to match wall thickness. Include wall clamp. Inlet: NPS 3/4 or NPS 1. Outlet: Concealed, with integral vacuum breaker and garden-hose thread complying with ASME B1.20.7. Box: Deep, flush mounting with cover. Box and Cover Finish: Polished nickel bronze Chrome plated.

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10. 11. 12.

2.10 A.

DRAIN VALVES Ball-Valve-Type, Hose-End Drain Valves: 1. 2. 3. 4. 5. 6. 7. 8. 9.

2.11 A.

Outlet: Exposed, with integral vacuum breaker and garden-hose thread complying with ASME B1.20.7. Nozzle and Wall-Plate Finish: Polished nickel bronze Rough bronze. Operating Keys: Two with each wall hydrant.

Standard: MSS SP-110 for standard-port, two-piece ball valves. Pressure Rating: 400-psig minimum CWP. Size: NPS 3/4. Body: Copper alloy. Ball: Chrome-plated brass. Seats and Seals: Replaceable. Handle: Vinyl-covered steel. Inlet: Threaded or solder joint. Outlet: Threaded, short nipple with garden-hose thread complying with ASME B1.20.7 and cap with brass chain.

WATER HAMMER ARRESTERS Water Hammer Arresters: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e. f. g. h. i.

2. 3. 4.

2.12 A.

Standard: ASSE 1010 or PDI-WH 201. Type: Metal bellows or Copper tube with piston. Size: ASSE 1010, Sizes AA and A through F or PDI-WH 201, Sizes A through F.

AIR VENTS Bolted-Construction Automatic Air Vents: 1. 2. 3. 4. 5.

B.

AMTROL, Inc. Josam Company. MIFAB, Inc. PPP Inc. Sioux Chief Manufacturing Company, Inc. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc. Tyler Pipe; Wade Div. Watts Drainage Products Inc. Zurn Plumbing Products Group; Specification Drainage Operation.

Body: Bronze. Pressure Rating: 125-psig minimum pressure rating at 140 deg F. Float: Replaceable, corrosion-resistant metal. Mechanism and Seat: Stainless steel. Size: NPS 3/8 minimum inlet. Inlet and Vent Outlet End Connections: Threaded.

Welded-Construction Automatic Air Vents: 1.

Body: Stainless steel.

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2. 3. 4. 5. 6.

2.13 A.

Pressure Rating: 150-psig minimum pressure rating. Float: Replaceable, corrosion-resistant metal. Mechanism and Seat: Stainless steel. Size: NPS 3/8 minimum inlet. Inlet and Vent Outlet End Connections: Threaded.

TRAP-SEAL PRIMER VALVES Supply-Type, Trap-Seal Primer Valves TP-1: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. b. c. d. e.

2. 3. 4. 5. 6. 7.

B.

Standard: ASSE 1018. Pressure Rating: 125 psig minimum. Body: Bronze. Inlet and Outlet Connections: NPS 1/2 threaded, union, or solder joint. Gravity Drain Outlet Connection: NPS 1/2 threaded or solder joint. Finish: Chrome plated, or rough bronze for units used with pipe or tube that is not chrome finished.

Drainage-Type, Trap-Seal Primer Valves: 1.

2.

Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: Manufacturers: Subject to compliance with requirements, provide products by one of the following: a.

3. 4. 5.

2.14 A.

MIFAB, Inc. PPP Inc. Sioux Chief Manufacturing Company, Inc. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc. Watts Industries, Inc.; Water Products Div.

Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

Standard: ASSE 1044, lavatory P-trap with NPS 3/8 minimum, trap makeup connection. Size: NPS 1-1/4 minimum. Material: Chrome-plated, cast brass.

TRAP-SEAL PRIMER SYSTEMS Trap-Seal Primer Systems TP-2: 1.

Manufacturers: Subject to compliance with requirements, provide products by one of the following: a.

2. 3. 4. 5. 6. 7.

PPP Inc.

Standard: ASSE 1044, Piping: NPS 3/4, ASTM B 88, Type L; copper, water tubing. Cabinet: Surface-mounting steel box with stainless-steel cover. Electric Controls: 24-hour timer, solenoid valve, and manual switch for 120-V ac power. Vacuum Breaker: ASSE 1001. Number Outlets: As indicated on drawings.

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8.

Size Outlets: NPS 1/2.

PART 3 - EXECUTION

3.1

INSTALLATION A.

Refer to Division 15 Section "Basic Mechanical Materials and Methods" for piping joining materials, joint construction, and basic installation requirements.

B.

Install backflow preventers in each water supply to mechanical equipment and systems and to other equipment and water systems that may be sources of contamination. Comply with authorities having jurisdiction. 1. 2.

3.

Locate backflow preventers in same room as connected equipment or system. Install drain for backflow preventers with atmospheric-vent drain connection with air-gap fitting, fixed air-gap fitting, or equivalent positive pipe separation of at least two pipe diameters in drain piping and pipe to floor drain. Locate air-gap device attached to or under backflow preventer. Simple air breaks are not acceptable for this application. Do not install bypass piping around backflow preventers.

C.

Install water regulators with inlet and outlet shutoff valves. Install pressure gages on inlet and outlet.

D.

Install water control valves with inlet and outlet shutoff valves. Install pressure gages on inlet and outlet.

E.

Install balancing valves in locations where they can easily be adjusted.

F.

Install Y-pattern strainers for water on supply side of each control valve, water pressurereducing valve, solenoid valve, and pump.

G.

Install outlet boxes recessed in wall. Install 2-by-4-inch fire-retardant-treated-wood blocking wall reinforcement between studs. Fire-retardant-treated-wood blocking is specified in Division 6 Section "Rough Carpentry."

H.

Install water hammer arresters in water piping according to PDI-WH 201.

I.

Install air vents at high points of water piping. Install drain piping and discharge onto floor drain.

J.

Install supply-type, trap-seal primer valves with outlet piping pitched down toward drain trap a minimum of 1 percent, and connect to floor-drain body, trap, or inlet fitting. Adjust valve for proper flow.

K.

Install drainage-type, trap-seal primer valves as lavatory trap with outlet piping pitched down toward drain trap a minimum of 1 percent, and connect to floor-drain body, trap, or inlet fitting.

L.

Install trap-seal primer systems with outlet piping pitched down toward drain trap a minimum of 1 percent, and connect to floor-drain body, trap, or inlet fitting. Adjust system for proper flow.

3.2

CONNECTIONS A.

Piping installation requirements are specified in other Division 15 Sections. Drawings indicate general arrangement of piping and specialties.

B.

Ground equipment according to Division 16 Section "Grounding and Bonding."

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C.

3.3

Connect wiring according to Division 16 Section "Conductors and Cables."

LABELING AND IDENTIFYING A.

Equipment Nameplates and Signs: Install engraved plastic-laminate equipment nameplate or sign on or near each of the following: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

B.

3.4

Pressure vacuum breakers. Intermediate atmospheric-vent backflow preventers. Reduced-pressure-principle backflow preventers. Double-check backflow-prevention assemblies. Carbonated-beverage-machine backflow preventers. Dual-check-valve backflow preventers. Water pressure-reducing valves. Calibrated balancing valves. Outlet boxes. Supply-type, trap-seal primer valves. Trap-seal primer systems.

Distinguish among multiple units, inform operator of operational requirements, indicate safety and emergency precautions, and warn of hazards and improper operations, in addition to identifying unit. Nameplates and signs are specified in Division 15 Section "Mechanical Identification."

FIELD QUALITY CONTROL A.

B.

3.5

Perform the following tests and prepare test reports: 1.

Test each pressure vacuum breaker, reduced-pressure-principle backflow preventer, double-check backflow-prevention assembly and double-check, detector-assembly backflow preventer according to authorities having jurisdiction and the device's reference standard.

2.

Provide test reports in Operation and Maintenance Manuals.

Remove and replace malfunctioning domestic water piping specialties and retest as specified above.

ADJUSTING A.

Set field-adjustable pressure set points of water pressure-reducing valves.

B.

Set field-adjustable flow set points of balancing valves.

C.

Set field-adjustable temperature set points of temperature-actuated water mixing valves.

END OF SECTION 15145

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