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All Categories > High Pressure Fittings and Tubing > Low Pressure Fittings and Tubing > Low Pressure Check and Excess Flow Valves > Low Pressure O-Ring Check Valves > View Items  
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Low Pressure O-Ring Check Valves

Check up to five results to perform an action.


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) add suffix LTTO (Low temperature spring & Teflon o-ring).

Caution: While testing has shown O-Rings to provide satisfactory service life, both cyclic and shelf life may vary widely with differing service conditions, properties of reactants, pressure and temperature cycling and age of the O-ring. FREQUENT INSPECTIONS SHOULD BE MADE to detect any deterioration, and O-rings replaced as required.

Caution: See Tubing section for proper selection of tubing.
Note: For optional material see Technical Information.

Note: All check valves are furnished complete with connection components unless otherwise specified.

All dimensions for reference only and subject to change.
For prompt service, Autoclave stocks select products. Consult your local representative.
All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.




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  Results 1 - 4 of 4 1 

Item #

Fits Connection Type

Pressure Rating

Orifice

Rated Cv

SW02200 W125 15000 psi
1034.19
bar
0.094 Inch
2.39
mm
0.15
SW04400 SW250 15000 psi
1034.19
bar
0.188 Inch
4.78
mm
0.63
SW06600 SW375 15000 psi
1034.19
bar
0.250 Inch
6.35
mm
1.70
SW08800 SW500 10000 psi
689.46
bar
0.375 Inch
9.53
mm
3.40
  Results 1 - 4 of 4 1 

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