Fluid control valves

Details Fluid control valves Fluid control valves

1987-03-24

1988-08-16

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 44, 123506, F16K 31363, F16K 3140

Patent

active

047638737

ABSTRACT:
A fluid control valve comprises a valve member slidable in a bore about one end of which is defined a seating. The valve member has a valve head located in a first chamber which in use is connected to a source of fluid under pressure. Below the valve head the valve member and bore define a second chamber into which fluid can flow from the first chamber when the control valve is open. The first chamber has an end wall which is engaged by the valve head in the open position and the end wall and valve head define a recess. In the open position of the valve the pressure in the recess is low but when fluid is supplied to the recess the pressure therein increases and the valve member moves to the closed position to prevent flow of liquid between the first and second chambers.

REFERENCES:
patent: 620829 (1899-03-01), Batchelor
patent: 1114431 (1914-10-01), Bopp
patent: 2634754 (1953-04-01), Rahn
patent: 3106936 (1963-10-01), Trautman
patent: 3980002 (1976-09-01), Jarman et al.

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