ASME A112.4.14:2004 pdf download Manually Operated, Quarter-Turn Shutoff Valves for Use in Plumbing Systems
2.2 End Connections
2.2.1 Taper Pipe Threads. Metallic taper pipe threadsshall be in accordance with ASME B1.20.1.Plastic taperpipe threads shall be in accordance with ASTM F1498
2.2.2 Solder Connections.Solder-cup ends for coppertube connection shall be in accordance with ANSI B16.18or ASME B16.22
2.2.3 Solvent Cement Connections. Socket ends forsolvent-cement connection to PVC or CPVC pipe or tubeshall be in accordance with ASTM D2466(PVC andCPVC)，ASTM D2467 (PVC)，ASTM D2846 and ASTMF439(CPVC)
2.2.4 PEX Barbs Connection.Metallic barb-ends forconnection to PEX tubing shall be in accordance withASTM F1807.Plastic barb-ends for connection to PEXtubing shallbe in accordance with ASTM F2159 or ASTMF1960.
2.2.5 Flared Connection.Flared connections to coppertube shall be in accordance with ASME B16.26.
2.2.6 Grooved End, Grooved end connections shall bein accordance with AWWA C606.
2.2.7 Other Connections, Connection methods notspecified herein shall be in accordance with a nationallyor internationally recognized standard.
2.3 Operation
The valve shall require turn from the fully closedposition to the fully opened position, or from the fullopened position to the fully closed position. The valveshall be constructed so that the operator can visuallydetermine that the valve is in the opened or closed position. When the valve is in the closed position, theoperating lever or flow indicator shall be perpendicularto the longitudinal axis of the valve. The stem flats orindicator on the top of the stem shall indicate that thevalve is in the opened or closed position when theoperating device has been removed.
3MATERIALS
The following requirements pertain to materials usedin valve body, bonnet, end pieces, pressure-containingparts, and wetted operating parts.
3.1 Copper Alloys
Copper alloys shall be minimum 58% copper and meetone of the following specifications:
ASTM B62(C83600)
ASTM B584(C84400)
ASTM B124(C37000)
ASTM B16(C36000)
ASTM B371(C69430)
UNS C89831
UNS C89833UNS C89837UNS C89510UNS C89520ISO Cu Zn40 Pb2 CW617NISO Cu Zn36 Pb2 AS CW602N
ISO Cu Zn39 Pb3 CW614N
3.2 Ferrous AlloysFerrous alloys shall be a 300 series stainless steel
3.3 Polymeric Materials
(a) PEX cross-linked polyethylene shall conform toASTM F876 Or ASTM F877.(b) Chlorinated polyvinyl chloride (CPVC) materialused for pressure containing parts shall conform toASTM D1784Classification 23447
3.4 Alternate Materials
Alternate equivalent materials used shall conform tonational or international standards for which mechanical and chemical data are available Metallic alloys withan excess of 8% lead shall not be used in contact withpotable water.
3.5 Flux and Solders
Flux and solders containing more than 0.2% lead shallnot be used in contact with potable water.
4 DESIGN REQUIREMENTS
4.1 Stem Design
The valve shall be designed so that the stem-seal alonedoes not retain the stem to prevent the removal of thestem while the valve is under pressure.
4.2 Temperature, Pressure Rating
Metallic valves shall have a minimum pressure ratingof 125 psi (862 kPa) and the minimum temperature rating shall be 140°F (60°C) for continuous use and 180°F(82°C) for intermittent use.