Home>ASME standards>ASME A112.4.14-2004 pdf download

ASME A112.4.14-2004 pdf download

ASME A112.4.14-2004 pdf download.Manually Operated, Quarter-Turn Shutoff Valves for Use in Plumbing Systems.
1 GENERAL 1.1 Scope This Standard establishes requirements for manually operated, quarter-turn valves in nominal sizes (NPS) ≤ 2. These valves are intended forindoorinstallation as pota- ble water shutoff valves between the meter and the sup- ply stop. Valves governed by this Standard are intended forservice attemperatures between34°F(1°C) and 180°F (82°C), with an allowable working pressure rating not less than 125 psi (862 kPa). 1.2 Limitations This Standard does not apply to hose end valves or endpoint devices as defined in NSF/ANSI 61, Section 9. 1.3 Units of Measurement The values stated in either U.S. customary units or the International System of Units (SI) are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in non-conformance with the Standard. All pressures, unless otherwise speci- fied, are gauge pressures. For the purpose of determin- ing conformance with this Standard, the convention for “rounding off” shall be as defined in ASTM E29. 1.4 References The following is a list of publications referenced in this Standard. ASME B1.20.1, Pipe Threads (Excluding Dryseal) ASME B16.18, Cast Copper Alloy Solder Joint Pressure Fittings ASME B16.22, Wrought Copper and Copper Alloy Sol- der Joint Pressure Fittings ASME B16.26, Cast Copper Alloy Fittings for Flared Copper Tubes Publisher: The American Society of Mechanical Engi- neers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 1 ASTM B16, Free-Cutting Brass Rod, Bar, and Shapes for Use in Screw Machines ASTM B62, Composition Bronze or Ounce Metal Castings ASTM B124, Copper and Copper Alloy Forging Rod, Bar, and Shapes ASTM B371, Copper-Zinc-Silicon Alloy Rod ASTM B584, Copper Alloy Sand Castings for General Applications ASTM D2846, Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems ASTM E29, Standard Practice for Using Significant Dig- its in TestData to Determine Conformance with Speci- fications ASTM F439, Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80 ASTM F876, Crosslinked Polyethylene (PEX) Tubing ASTM F877, Crosslinked Polyethylene (PEX) Plastic Hot- and Cold-Water Distribution Systems ASTM F1498, Taper Pipe Threads 60˚ for Thermoplastic Pipe and Fittings ASTM F1807, Metal Insert Fittings Utilizing a Copper Crimp RingforSDR9 Cross-linked Polyethylene(PEX) Tubing ASTM F1960, Cold Expansion Fittings with PEX Rein- forcing Rings for Use with Cross-linked Polyethylene (PEX) Tubing ASTM F1970, Special Engineered Fittings, Appurte- nances orValvesforuseinPoly(VinylChloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) System ASTM F2159, Plastic Insert Fittings Utilizing a Copper Crimp RingforSDR9 Cross-linked Polyethylene(PEX) Tubing Publisher: The American Society for Testing and Materi- als (ASTM), 100 Barr Harbor Drive, West Consho- hocken, PA 19428. ANSI/ISA 75.01.01, Flow Equations for Sizing Control Valves Publisher: Instrument Society ofAmerica (ISA), 67 Alex- ander Drive, Research Triangle Park, NC 27709. NSF/ANSI 61, Drinking Water System Components – Health Effects Publisher: NSF International, 789 North Dixboro Road, Ann Arbor, MI 48113.
2 GENERAL CONSTRUCTION AND ASSEMBLY 2.1 General Samples for testing to this Standard shall be randomly selected from a lot ofproductionrepresentative samples. 2.2 End Connections 2.2.1 Taper Pipe Threads. Metallic taper pipe threads shall be in accordance with ASME B1.20.1. Plastic taper pipe threads shall be in accordance with ASTM F1498. 2.2.2 SolderConnections. Solder-cup ends for copper tube connection shall be in accordance with ANSI B16.18 or ASME B16.22. 2.2.3 Solvent Cement Connections. Socket ends for solvent-cement connection to PVC or CPVC pipe or tube shall be in accordance with ASTM D2466 (PVC and CPVC), ASTM D2467 (PVC), ASTM D2846 and ASTM F439 (CPVC). 2.2.4 PEX Barbs Connection. Metallic barb-ends for connection to PEX tubing shall be in accordance with ASTM F1807. Plastic barb-ends for connection to PEX tubingshall be inaccordance withASTMF2159 orASTM F1960. 2.2.5 Flared Connection. Flared connections to copper tube shall be in accordance with ASME B16.26. 2.2.6 Grooved End. Grooved end connections shall be in accordance with AWWA C606. 2.2.7 Other Connections. Connection methods not specified herein shall be in accordance with a nationally or internationally recognized standard. 2.3 Operation The valve shall require 1 ⁄ 4 turn from the fully closed position to the fully opened position, or from the fully opened position to the fully closed position. The valve shall be constructed so that the operator can visually determine that the valve is in the opened or closed posi- tion. When the valve is in the closed position, the operating lever or flow indicator shall be perpendicular to the longitudinal axis of the valve. The stem flats or indicator on the top of the stem shall indicate that the valve is in the opened or closed position when the operating device has been removed. 3 MATERIALS The following requirements pertain to materials used in valve body, bonnet, end pieces, pressure-containing parts, and wetted operating parts. 3.1 Copper Alloys Copperalloysshallbeminimum58% copperandmeet one of the following specifications: 2 ASTM B62 (C83600) ASTM B584 (C84400) ASTM B124 (C37000) ASTM B16 (C36000) ASTM B371 (C69430) UNS C89831 UNS C89833 UNS C89837 UNS C89510 UNS C89520 ISO Cu Zn40 Pb2 CW617N ISO Cu Zn36 Pb2 As CW602N ISO Cu Zn39 Pb3 CW614N 3.2 Ferrous Alloys Ferrous alloys shall be a 300 series stainless steel. 3.3 Polymeric Materials (a) PEX cross-linked polyethylene shall conform to ASTM F876 or ASTM F877. (b) Chlorinated polyvinyl chloride (CPVC) material used for pressure containing parts shall conform to ASTM D1784, Classification 23447. 3.4 Alternate Materials Alternate equivalent materials used shall conform to national or international standards for which mechani- cal and chemical data are available. Metallic alloys with an excess of 8% lead shall not be used in contact with potable water. 3.5 Flux and Solders Flux and solders containing more than 0.2% lead shall not be used in contact with potable water. 4 DESIGN REQUIREMENTS 4.1 Stem Design The valve shall be designed so that the stem-seal alone does not retain the stem to prevent the removal of the stem while the valve is under pressure.

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