Servo piston valve

Details Servo piston valve Servo piston valve

1990-04-19

1991-01-22

Hepperle, Stephen M.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

137509, 251118, 251282, F16K 112, F16K 31124

Patent

active

049865129

ABSTRACT:
A moving valve lid cooperating with a valve seat is provided in a valve body. The lid is connected by way of a spindle to a servopiston moving in a cylinder. The valve seat merges, on the side remote from the side, into a compensating cylinder in which a compensating piston connected coaxially to the lid is guided. Those end faces of the lid and compensating piston which are near one another are of substantially the same size as one another. A hollow flow deflector is disposed in the valve body upstream of the valve seat and the lid has an extension medium inflow side which is of substantially the same diameter as the lid which extends into the flow deflector.

REFERENCES:
patent: 2865595 (1958-12-01), Barlow
patent: 3729167 (1973-04-01), Gulich
patent: 4088297 (1978-05-01), Doyle et al.
patent: 4901978 (1990-02-01), Feild

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