Charge control valve and piston assembly for diaphragm pump

Details Charge control valve and piston assembly for diaphragm pump Charge control valve and piston assembly for diaphragm pump

F - Mech Eng,Light,Heat,Weapons

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F04B 9/10 (2006.01) F04B 9/04 (2006.01) F04B 35/02 (2006.01) F04B 43/067 (2006.01)

Patent

CA 1075078

CHARGE CONTROL VALVE AND PISTON ASSEMBLY FOR DIAPHRAGM PUMP ABSTRACT OF THE DISCLOSURE An apparatus for reciprocating a piston in a diaphragm pump wherein the piston alternately pressurizes and relieves an oil filled chamber having a diaphragm separating the chamber from a liquid pumping chamber, the invention comprising a bearing shoe interposed between the piston and driving crank shaft, wherein the shoe has oil ports for lubricating and for relieving excess fluid . volume from the oil chamber during each piston stroke.

291518

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