Pump including a control valve and sealing member

Details Pump including a control valve and sealing member Pump including a control valve and sealing member

1995-04-20

1997-03-25

Casaregola, Louis J.

Pumps

With condition responsive pumped fluid control

Fluid flow rate responsive

417297, 277901, F04B 4900

Patent

active

056138407

ABSTRACT:
A pump comprising a pump body having a control valve for controlling working fluid flow from the pump body to an actuator through a joint. The joint is connected mechanically to the pump body through a washer made of a material different from that of the pump body. The washer has a side surface held in contact with the pump body at a junction. The pump also includes an annular seal member provided to keep the junction from exposure to the environment. In an embodiment of the invention, the seal member is placed in an annular groove formed in the outer peripheral surface of the pump body. The seal member may have a side surface in fluid-sealing contact with the surface of the washer so as to keep the junction between the pump body and the washer from exposure to the environment.

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