221119 SF - DOMESTIC WATER PIPING SPECIALTIES.DOC

UNIT TRAINING EQUIPMENT SITE ADD/ALT

Copyright 2009 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 221119 - DOMESTIC WATER PIPING SPECIALTIES

Revise this Section by deleting and inserting text to meet Project-specific requirements.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Vacuum breakers.

2. Backflow preventers.

3. Temperature-actuated, water mixing valves.

4. Strainers.

5. Hose bibbs.

6. Wall hydrants.

7. Drain valves.

8. Water-hammer arresters.

9. Trap-seal primer valves.

B. Related Requirements:

Retain subparagraphs below to cross-reference requirements Contractor might expect to find in this Section but are specified in other Sections.

1. Division 22 Section “Domestic Water Piping.”

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1.3 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

1.4 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

PART 2 - PRODUCTS

See Editing Instruction No. 1 in the Evaluations for cautions about named manufacturers and products. For an explanation of options and Contractor's product selection procedures, see Division 01 Section "Product Requirements."

2.1 GENERAL REQUIREMENTS FOR PIPING SPECIALTIES

Retain both options in paragraph below if plastic piping specialties are required.

A. Potable-water piping and components shall comply with NSF 61 and NSF 14.

2.2 PERFORMANCE REQUIREMENTS

Coordinate this article with Division 22 Section "Domestic Water Piping."

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

2.3 VACUUM BREAKERS

Copy "Pipe-Applied, Atmospheric-Type Vacuum Breakers" Paragraph below and re-edit for each type of vacuum breaker required. If only one type is required, drawing designation may be omitted.

Pipe-applied, atmospheric-type vacuum breakers in first paragraph below are for moderate to high hazard and are available in NPS 1/4 to NPS 3 (DN 8 to DN 80). They are unsuitable for continuous pressure or for protection from backflow.

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

1. Standard: ASSE 1001.

2. Size: NPS 1/4 to NPS 3, as required to match connected piping.

3. Body: Bronze.

4. Inlet and Outlet Connections: Threaded.

5. Finish: Rough bronze.

Copy "Hose-Connection Vacuum Breakers" Paragraph below and re-edit for each type of vacuum breaker required. If only one type is required, drawing designation may be omitted.

Hose-connection vacuum breakers in paragraph below are for low hazard and are unsuitable for continuous pressure. Outlet size is garden-hose thread.

B. Hose-Connection Vacuum Breakers:

1. Standard: ASSE 1011.

2. Body: Bronze, nonremovable, with manual drain.

3. Outlet Connection: Garden-hose threaded complying with ASME B1.20.7.

4. Finish: Chrome or nickel plated.

2.4 BACKFLOW PREVENTERS

Copy "Intermediate Atmospheric-Vent Backflow Preventers" Paragraph below and re-edit for each type of backflow preventer required. If only one type is required, drawing designation may be omitted.

Intermediate atmospheric-vent backflow preventers in first paragraph below are for moderate hazard and are available in NPS 1/2 and NPS 3/4 (DN 15 and DN 20).

Copy "Reduced-Pressure-Principle Backflow Preventers" Paragraph below and re-edit for each type of backflow preventer required. If only one type is required, drawing designation may be omitted.

Reduced-pressure-principle backflow preventers in first paragraph below are for high hazard and are available in NPS 3/4 to NPS 10 (DN 20 to DN 250).

A. Reduced-Pressure-Principle Backflow Preventers:

1. Standard: ASSE 1013.

2. Operation: Continuous-pressure applications.

3. Pressure Loss: 12 psig maximum, through middle third of flow range.

4. Body: Bronze for NPS 2 and smaller; cast iron with interior lining that complies with AWWA C550 or that is FDA approved for NPS 2-1/2 and larger.

5. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger.

6. Configuration: Designed for horizontal, straight-through flow.

7. Accessories:

a. Valves NPS 2 and Smaller: Ball type with threaded ends on inlet and outlet.

b. Valves NPS 2-1/2 and Larger: Outside-screw and yoke-gate type with flanged ends on inlet and outlet.

c. Air-Gap Fitting: ASME A112.1.2, matching backflow-preventer connection.

Copy "Double-Check, Backflow-Prevention Assemblies" Paragraph below and re-edit for each type of backflow-prevention assembly required. If only one type is required, drawing designation may be omitted.

Double-check, backflow-prevention assemblies in paragraph below are for low hazard and are available in NPS 3/4 to NPS 10 (DN 20 to DN 250).

B. Double-Check, Backflow-Prevention Assemblies:

1. Standard: ASSE 1015.

2. Operation: Continuous-pressure applications unless otherwise indicated.

3. Pressure Loss: 5 psig maximum, through middle third of flow range.

4. Body: Bronze for NPS 2 and smaller; cast iron with interior lining that complies with AWWA C550 or that is FDA approved for NPS 2-1/2 and larger.

5. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger.

6. Configuration: Designed for horizontal, straight-through flow.

7. Accessories:

a. Valves NPS 2 and Smaller: Ball type with threaded ends on inlet and outlet.

2.5 TEMPERATURE-ACTUATED, WATER MIXING VALVES

Copy "Water-Temperature Limiting Devices" Paragraph below and re-edit for each type of limiting device required. If only one type is required, drawing designation may be omitted.

Water-temperature limiting devices in first paragraph below are unsuitable for service as master thermostatic mixing valves. Devices below are available in NPS 1/2 to NPS 1 (DN 15 to DN 25) and comply with ASSE 1016, ASSE 1017, or both; however, neither standard is adequate for them. ASSE 1070, "Performance Requirements for Water Temperature Limiting Devices," is under development.

A. Water-Temperature Limiting Devices:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

a. Armstrong International, Inc.

b. Watts; a division of Watts Water Technologies, Inc.; Watts Regulator Company.

c. Zurn Industries, LLC; Plumbing Products Group; Wilkins Water Control Products.

2. Standard: ASSE 1017.

3. Pressure Rating: 125 psig.

4. Type: Thermostatically controlled, water mixing valve.

5. Material: Bronze body with corrosion-resistant interior components.

6. Connections: Threaded union inlets and outlet.

7. Accessories: Check stops on hot- and cold-water supplies, and adjustable, temperature-control handle.

Copy "Primary, Thermostatic, Water Mixing Valves" Paragraph below and re-edit for each type of water mixing valve required. If only one type is required, drawing designation may be omitted.

Primary, thermostatic, water mixing valves in paragraph below are available in NPS 3/4 to NPS 3 and maybe in NPS 4 (DN 20 to DN 80 and maybe in DN 100), but usually are NPS 2 (DN 50) or smaller.

2.6 STRAINERS FOR DOMESTIC WATER PIPING

Copy "Y-Pattern Strainers" Paragraph below and re-edit for each type of Y-pattern strainer required. If only one type is required, drawing designation may be omitted.

A. Y-Pattern Strainers:

1. Pressure Rating: 125 psig minimum unless otherwise indicated.

2. Body: Bronze for NPS 2 and smaller; cast iron with interior lining that complies with AWWA C550 or that is FDA approved, epoxy coated and for NPS 2-1/2 and larger.

3. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger.

4. Screen: Stainless steel with round perforations unless otherwise indicated.

If retaining more than one screen size, indicate screen size on Drawings.

5. Perforation Size:

a. Strainers NPS 2 and Smaller: 0.020 inch.

b. Strainers NPS 2-1/2 to NPS 4: 0.045 inch.

6. Drain: Pipe plug.

2.7 WALL HYDRANTS

Wall hydrants without integral vacuum breakers or backflow preventers are available but not recommended.

Copy "Nonfreeze Wall Hydrants" Paragraph below for each type of wall hydrant required. If only one type is required, drawing designation may be omitted.

A. Nonfreeze Wall Hydrants:

1. Standard: ASME A112.21.3M for exposed-outlet, self-draining wall hydrants.

2. Pressure Rating: 125 psig.

3. Operation: Loose key.

4. Casing and Operating Rod: Of length required to match wall thickness. Include wall clamp.

5. Inlet: NPS 3/4 or NPS 1.

6. Outlet: Concealed, with integral vacuum breaker and garden-hose thread complying with ASME B1.20.7.

7. Box: Deep, flush mounted with cover.

8. Box and Cover Finish: Polished nickel bronze.

Retain "Outlet," "Box," and "Box and Cover Finish" subparagraphs above for concealed-outlet-type wall hydrants or "Outlet" and "Nozzle and Wall-Plate Finish" subparagraphs below for exposed-outlet-type wall hydrants.

9. Outlet: Exposed, with integral vacuum breaker and garden-hose thread complying with ASME B1.20.7.

10. Nozzle and Wall-Plate Finish: Polished nickel bronze.

11. Operating Keys(s): Two with each wall hydrant.

Copy "Nonfreeze, Hot- and Cold-Water Wall Hydrants" Paragraph below and re-edit for each type of wall hydrant required. If only one type is required, drawing designation may be omitted.

Copy "Moderate-Climate Wall Hydrants" Paragraph below and re-edit for each type of wall hydrant required. If only one type is required, drawing designation may be omitted.

Copy "Vacuum Breaker Wall Hydrants" Paragraph below and re-edit for each type of wall hydrant required. If only one type is required, drawing designation may be omitted.

2.8 DRAIN VALVES

Copy "Ball-Valve-Type, Hose-End Drain Valves" Paragraph below and re-edit for each type of drain valve required. If only one type is required, drawing designation may be omitted.

A. Ball-Valve-Type, Hose-End Drain Valves:

1. Standard: MSS SP-110 for standard-port, two-piece ball valves.

2. Pressure Rating: 400-psig minimum CWP.

3. Size: NPS 3/4.

4. Body: Copper alloy.

5. Ball: Chrome-plated brass.

6. Seats and Seals: Replaceable.

7. Handle: Vinyl-covered steel.

8. Inlet: Threaded or solder joint.

9. Outlet: Threaded, short nipple with garden-hose thread complying with ASME B1.20.7 and cap with brass chain.

2.9 WATER-HAMMER ARRESTERS

Copy "Water-Hammer Arresters" Paragraph below and re-edit for each type of water-hammer arrester required. If only one type is required, drawing designation may be omitted.

A. Water-Hammer Arresters:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

To require a specific type of water-hammer arrester, verify its availability with manufacturer.

a. Sioux Chief Manufacturing Company, Inc.

b. Watts Drainage Products.

c. Zurn Industries, LLC; Plumbing Products Group; Specification Drainage Products.

2. Standard: ASSE 1010 or PDI-WH 201.

3. Type: Copper tube with piston.

4. Size: ASSE 1010, Sizes AA and A through F, or PDI-WH 201, Sizes A through F.

2.10 TRAP-SEAL PRIMER DEVICE

Copy "Supply-Type, Trap-Seal Primer Device" Paragraph below and re-edit for each type of primer valve required. If only one type is required, drawing designation may be omitted.

A. Supply-Type, Trap-Seal Primer Device:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

a. Precision Plumbing Products, Inc.

b. Sioux Chief Manufacturing Company, Inc.

c. Watts; a division of Watts Water Technologies, Inc.; Watts Regulator Company.

2. Standard: ASSE 1018.

3. Pressure Rating: 125 psig minimum.

4. Body: Bronze.

5. Inlet and Outlet Connections: NPS 1/2 threaded, union, or solder joint.

6. Gravity Drain Outlet Connection: NPS 1/2 threaded or solder joint.

7. Finish: Chrome plated, or rough bronze for units used with pipe or tube that is not chrome finished.

Copy "Drainage-Type, Trap-Seal Primer Device" Paragraph below and re-edit for each type of primer valve required. If only one type is required, drawing designation may be omitted.

PART 3 - EXECUTION

3.1 INSTALLATION

A. 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. Locate backflow preventers in same room as connected equipment or system.

2. 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 unacceptable for this application.

3. Do not install bypass piping around backflow preventers.

B. Install temperature-actuated, water mixing valves with check stops or shutoff valves on inlets and with shutoff valve on outlet.

1. Install cabinet-type units recessed in or surface mounted on wall as specified.

C. Install Y-pattern strainers for water on supply side of each water pressure-reducing valve.

Water-hammer arresters in first paragraph below are best shown on water risers and details. Specifying number, size, and location here is difficult.

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

E. 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.

3.2 CONNECTIONS

Coordinate piping installations and specialty arrangements with Drawings and with requirements specified in piping systems. If Drawings are explicit enough, these requirements may be reduced or omitted.

A. Comply with requirements for piping specified in other Division 22 Sections. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Comply with requirements for ground equipment in Division 26 Section "Grounding and Bonding for Electrical Systems."

C. Fire-retardant-treated-wood blocking is specified in Division 26 Section "Low-Voltage Electrical Power Conductors and Cables" for electrical connections.

3.3 FIELD QUALITY CONTROL

Retain "Perform the following tests and inspections" Paragraph below to require Contractor to perform tests and inspections.

A. Perform the following tests and inspections:

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

See Division 01 Section "Quality Requirements" for retesting and reinspecting requirements and Division 01 Section "Execution" for requirements for correcting the Work.

B. Domestic water piping specialties will be considered defective if they do not pass tests and inspections.

C. Prepare test and inspection reports.

3.4 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 221119