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Check Valves

Check Valves

Check valves are mechanical valves that perform by allowing gases and liquids to flow in a unidirectional manner. They are designed to open when the fluid / gas flow is in the desired direction, and automatically close when there is a flow in the opposite direction. These unidirectional valves serve a variety of purposes and can be used in different industries & at different temperatures:

  • Swing Valve > offers a larger pressure drop compared to others
  • Ball Valve > largely used to move fluids
  • Split Disc > useful for applications requiring low pressure drops, large check valves, low operating pressures, various positions
  • Diaphragm > made of material that can\'t sustain extreme temperatures (not for wide range of applications)
  • Wafer Valve > sleek design

Evergreen Midwest’s check valves provide leak-proof, tight sealing protection against flow direction change. Users can select an appropriate check valve after reviewing the options available. 

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Check Valves - Unidirectional - Evergreen Midwest

Showing 21-40 of 97 items

Set Descending Direction
Product SKU DESCRIPTION MANUFACTURER
Check Valve 1.629" - 1.631" Sweat End BK8512S Check Valve 1.629" - 1.631" Sweat End Rego
Check Valve 1-1/2" F.NPT BK8512T Check Valve 1-1/2" F.NPT Rego
C Series C250B Brass (SS Piston) C-Series Check Valve - 1/4" NPT Female x Female; Not O2 cleaned Rego
C Series C250BL Brass (SS Piston with Viton Seal) C-Series Check Valve - 1/4" NPT Female x Female; Not O2 cleaned Rego
C Series C250S Steel (SS Piston) C-Series Check Valve - 1/4" NPT Female x Female; Not O2 cleaned Rego
C Series C250SS Stainless Steel (SS Piston) C-Series Check Valve - 1/4" NPT Female x Female; Not O2 cleaned Rego
C Series C250SSL Stainless Steel (SS Piston with Viton Seal) C-Series Check Valve - 1/4" NPT Female x Female; Not O2 cleaned Rego
C Series C375B Brass (SS Piston) C-Series Check Valve - 3/8" NPT Female x Female Rego
C Series C375BL Brass (SS Piston with Viton Seal) C-Series Check Valve - 3/8" NPT Female x Female Rego
C Series C375S Steel (SS Piston) C-Series Check Valve - 3/8" NPT Female x Female Rego
C Series C375SS Stainless Steel (SS Piston) C-Series Check Valve - 3/8" NPT Female x Female Rego
C Series C500B Brass (SS Piston) C-Series Check Valve - 1/2" NPT Female x Female-- NOT cleaned for Oxygen service Rego
C Series C500BL Brass (SS Piston with Viton Seal) C-Series Check Valve - 1/2" NPT Female x Female-- NOT cleaned for Oxygen service Rego
C Series C500S Steel (SS Piston) C-Series Check Valve - 1/2" NPT Female x Female---NOT cleaned for Oxygen service Rego
C Series C500SSL Stainless Steel (SS Piston with Viton Seal) C-Series Check Valve - 1/2" NPT Female x Female ---NOT cleaned for Oxygen service Rego
C Series C750B Brass (SS Piston) C-Series Check Valve - 3/4" NPT Female x Female --NOT cleaned for Oxygen service Rego
C Series C750BL Brass (SS Piston with Viton Seal) C-Series Check Valve - 3/4" NPT Female x Female-- NOT cleaned for Oxygen service Rego
C Series C750S Steel (SS Piston) C-Series Check Valve - 3/4" NPT Female x Female --NOT cleaned for Oxygen service Rego
C Series C750SSL Stainless Steel (SS Piston with Viton Seal) C-Series Check Valve - 3/4" NPT Female x Female --NOT cleaned for Oxygen service Rego
1 CG250B REPLACES C250B Brass Body Check Valve 1/4" F.NPT, Metal Seat, 3000 PSIG Rego
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