Pump valve

Details Pump valve Pump valve

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 53/10 (2006.01)

Patent

CA 2149356

A positive displacement pump includes a piston cylinder defining an interior chamber extending along an axis, and a piston configured to reciprocatingly slide in the interior chamber in opposing directions. An annular valve ring circumscribes the piston and is positioned between a portion of the piston and the piston cylinder. The annular valve ring and piston include cooperating tapered seal surfaces such that when the piston is moved in a first direction, the annular valve ring and the piston engage to form a fluid tight seal, but when the piston is moved in a second opposite direction, the annular valve ring and the piston disengage to allow material in the chamber to flow past the annular valve ring and piston.

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