Pump and control valve with annular sealing member to prevent co

Details Pump and control valve with annular sealing member to prevent co Pump and control valve with annular sealing member to prevent co

1995-04-20

1997-01-21

Thorpe, Timothy

Pumps

With condition responsive pumped fluid control

Fluid flow rate responsive

277901, 251148, F04B 4900

Patent

active

055954782

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 present invention (FIG. 7), an annular member is provided between the pump body and the washer, with the annular member being made of an insulating material to prevent electrical conduction between the pump body and the washer.

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