Wafer Butterfly Spring Loaded Double Disc Non Return
Check This valve are mainly composed of boby. disc(valve
stem), spring and etc. The short closing stroke of disc and
function of spring may strengthen closing effect and reduce the
sound of water hammer and slamming .Specification1) Size: 2"
- 40"2) Class: 150lbs - 900lbsTechnical standards:1) Design and
manufacture: API 6D2) Face-to-face: ANSI B16.103) Flange end: ANSI
B16.54) Inspection and test: API 598Main materials:1) Body and
disc: Brass, carbon steel, stainless steel, Hascrome2) Stem:
Stainless steel3) Torsion spring: Stainless steel4) Seal surface:
Buna-n rubber, stainless steel, gathered four fluorineEthylene, and
nylon plastics. Suitable MediumWater, Oil, Gas and etc.Main
materialCAST IRON,ASTM A216 WCB, WCC, WC6, SS304, SS316, CF8,
ETC.Suitable Temperature≤80ºCNominal Pressure150lb--900lbNominal
Diameter2"--40"Flange DimensionASME B16.5, BS4504, ISO2531, ISO7005
and other standards conforming to the requirementsFace to Face
LengthAPI594,BS5155, ISO5752, DIN3352 and other standards
conforming to the requirementsWafer End Non Return Check Valve
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