VA245-17-B-0086-A00006006.pdf

VA Huntington March 15, 2017 Install Back-Up Generator 1 00% Construction Documents Huntington, WV 25704 Project No. 581-16-101

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SECTION 22 05 23

GENERAL-DUTY VALVES FOR PLUMBING PIPING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section describes the requirements for general -duty valves for domestic water and sewer systems.

B. A complete listing of all acronyms and abbreviation s are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND S AMPLES.

C. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING .

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this s pecification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society for Testing and Materials (ASTM ):

A126-2004(R2009) ......Standard Specification for G ray Iron Castings for Valves, Flanges, and Pipe Fittings

A276-2013a ............Standard Specification for S tainless Steel Bars and Shapes

A536-1984(R2009) ......Standard Specification for D uctile Iron

Castings

B62-2009 Standard Specification for Composition Bro nze or Ounce Metal

Castings

B584-2013 .............Standard Specification for C opper Alloy Sand

Castings for General Applications

C. International Code Council (ICC):

IPC-2015 .............International Plumbing Code

D. Manufacturers Standardization Society of the Val ve and Fittings

Industry, Inc. (MSS):

SP-25-2008 ............Standard Marking Systems for Valves, Fittings, Flanges and Unions

SP-67-2011 ............Butterfly Valves

SP-70-2011 ............Gray Iron Gate Valves, Flang ed and Threaded

Ends

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SP-71-2011 ............Gray Iron Swing Check Valves , Flanged and

Threaded Ends

SP-85-2011 ............Gray Iron Globe & Angle Valv es, Flanged and

Threaded Ends

E. National Environmental Balancing Bureau (NEBB):

7th Edition 2005 ......Procedural Standards for Tes ting, Adjusting, Balancing of Environmental Systems

F. NSF International (NSF):

61-2012 .............Drinking Water System Compone nts – Health

Effects

372-2011 .............Drinking Water System Compon ents – Lead Content

University of Southern California Foundation for Cr oss Connection

1.4 SUBMITTALS

A. Submittals, including number of required copies, sh all be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PR ODUCT DATA, and

SAMPLES.

B. Information and material submitted under this secti on shall be marked

“SUBMITTED UNDER SECTION 22 05 23, GENERAL-DUTY VAL VES FOR PLUMBING

PIPING”, with applicable paragraph identification.

C. Manufacturer's Literature and Data Including: Full item description and optional features and accessories. Include dimensio ns, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Ball Valves.

2. Gate Valves.

3. Butterfly Valves.

D. Complete operating and maintenance manuals includin g wiring diagrams, technical data sheets and information for ordering replaceable parts:

1. Include complete list indicating all components of the systems.

2. Include complete diagrams of the internal wiring fo r each item of equipment.

3. Diagrams shall have their terminals identified to f acilitate installation, operation and maintenance.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Valves shall be prepared for shipping as follows:

1. Protect internal parts against rust and corrosion.

2. Protect threads, flange faces, grooves, and weld en ds.

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3. Set gate valves closed to prevent rattling.

4. Set ball valves open to minimize exposure of functi onal surfaces.

5. Set butterfly valves closed or slightly open.

B. Valves shall be prepared for storage as follows:

1. Maintain valve end protection.

2. Store valves indoors and maintain at higher than am bient dew point temperature.

C. A sling shall be used for large valves. The sling s hall be rigged to avoid damage to exposed parts. Hand wheels or stems shall not be used as lifting or rigging points.

PART 2 - PRODUCTS

2.1 VALVES, GENERAL

A. Asbestos packing and gaskets are prohibited.

B. Bio-Based Materials: For products designated by the USDA’s Bio-

Preferred Program, provide products that meet or ex ceed USDA recommendations for bio-based content, so long as p roducts meet all performance requirements in this specifications sec tion. For more information regarding the product categories covere d by the Bio-

Preferred Program, visit http://www.biopreferred.gov .

2.2 SHUT-OFF VALVES

A. Cold Hot Water:

1. Ball, MSS SP-110, Ball valve shall be full port thr ee piece or two piece with a union design with adjustable stem pack age. Threaded stem designs are not allowed. The ball valve shall have a SWP rating of 150 psig (1035 kPa) and a CWP rating of 600 psig (4138 kPa). The body material shall be Bronze ASTM B584, Alloy C844 . The ends shall be non-lead solder.

2. Class 125, OS&Y, Cast Iron Gate Valve. The gate val ve shall meet MSS

SP-70 type I standard. The gate valve shall have a CWP rating of 200 psig (1380 kPa). The valve materials shall meet AST M A126, grey iron with bolted bonnet, flanged ends, bronze trim, and positive-seal resilient solid wedge disc. The gate valve shall be gear operated for sizes under 8 inches (200 mm) and crank operate d for sizes 8 inches (200 mm) and above.

3. Single flange, ductile iron butterfly valves: The s ingle flanged butterfly valve shall meet the MSS SP-67 standard. The butterfly valve shall have a CWP rating of 200 psig (1380 kPa ). The butterfly

22 05 23 - 4 valve shall be lug type, suitable for bidirectional dead-end service at rated pressure without use of downstream flange. The body material shall comply with ASTM A536 ductile iron. The seat shall be

EPDM with stainless steel disc and stem.

4. Grooved end, ductile iron butterfly valves. The gro oved butterfly valve shall meet the MSS SP-67 standard. The groove d butterfly valve shall have a CWP rating of 200 psig (1380 kPa). The valve materials shall be epoxy coated ductile iron conforming to AS TM A536 with two piece stainless steel stem, EPDM encapsulated ducti le iron disc, and

EPDM seal. The butterfly valve shall be gear operat ed.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Valve interior shall be examined for cleanliness, f reedom from foreign matter, and corrosion. Special packing materials sh all be removed, such as blocks, used to prevent disc movement during shi pping and handling.

B. Valves shall be operated in positions from fully op en to fully closed.

Guides and seats shall be examined and made accessi ble by such operations.

C. Threads on valve and mating pipe shall be examined for form and cleanliness.

D. Mating flange faces shall be examined for condition s that might cause leakage. Bolting shall be checked for proper size, length, and material. Gaskets shall be verified for proper size and that its material composition is suitable for service and fr ee from defects and damage.

E. Do not attempt to repair defective valves; replace with new valves.

3.2 INSTALLATION

A. Install valves with unions or flanges at each piece of equipment arranged to allow service, maintenance, and equipme nt removal without system shutdown.

B. Valves shall be located for easy access and shall b e provide with separate support.

C. Valves shall be installed in horizontal piping with stem at or above center of pipe.

D. Valves shall be installed in a position to allow fu ll stem movement.

E. If an installation is unsatisfactory to the COR, th e Contractor shall correct the installation at no cost to the Governme nt.

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3.3 ADJUSTING

A. Valve packing shall be adjusted or replaced after p iping systems have been tested and put into service but before final a djusting and balancing. Valves shall be replaced if persistent l eaking occurs.

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