ASME A112.4.14 pdf download

ASME A112.4.14 pdf download Manually Operated, Quarter-Turn Shutoff Valves for Use in Plumbing Systems
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 position.
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:
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.