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Provide unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure*, valve shuts off. (Not for use as relief valve.)

Materials: 316 Stainless Steel: body, cover, poppet and cover gland. 300 Series Stainless Steel: spring Standard O-ring: Viton, for operation to 500° F (260°C). Buna-N or Teflon available for 250°F (121°C) or 400°F (204°C) respectively; specify when ordering.

*Cracking Pressure: 20 psi (1.38 bar) ±30%. Springs for higher cracking pressures (up to 100 psi (6.89bar)) available on special order for O-ring style check valves only.

Minimum operating temperature for standard o-ring check valves 0°F (17.8°C).
For low temperature option to -423°F (-252°C) addmore
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Item #

Fits Connection Type

Pressure Rating

Orifice

Rated Cv

Add To Cart/Request Quote
N/A W125 N/A 15000 psi1034.19 bar N/A 0.094 in2.39 mm N/A 0.15 Request Quote
N/A SW250 N/A 15000 psi1034.19 bar N/A 0.188 in4.78 mm N/A 0.63 Request Quote
N/A SW375 N/A 15000 psi1034.19 bar N/A 0.250 in6.35 mm N/A 1.70 Request Quote
N/A SW500 N/A 10000 psi689.46 bar N/A 0.375 in9.53 mm N/A 3.40 Request Quote
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