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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. With an easy mechanism, 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 one-directional valves serve a variety of purposes and can be used in different industries and at different temperatures:

  • The Swing valve type offers a larger pressure drop as compared to other types
  • The Ball valve variety is majorly used to move fluids
  • Split disc ones prove to be useful for applications that require low pressure drops, large check valves, lower operating pressures and/or for applications that need the valves to be installed in almost any position.
  • The Diaphragm type consists of rubber and other materials that cannot sustain extreme temperature conditions and therefore cannot be used for a wide range of applications.
  • The sleek design of wafer valves cause their sales to increase as the cost of production goes high


Evergreen Midwest’s check valves provide leak-proof, tight sealing protection against minimal flow direction changes. Users can select an appropriate check valve after carefully matching the requirements through a myriad seal, valve body and disc options.