Pilot operated poppet valve with speed control

Details Pilot operated poppet valve with speed control Pilot operated poppet valve with speed control

1985-08-15

1987-02-03

Garrett, Robert E.

Fluid handling

Systems

Supply and exhaust

13759614, 91443, E03B 707

Patent

active

046403094

ABSTRACT:
A pilot-operated poppet valve with integral flow control, the latter being adjustable and direction sensitive to provide free or metered flow. Pressure actuated slidable metering seats having integral lip seals are disposed at load ports and are responsive to pressure therein to move relative to adjustable needles between a metering position and a spaced free flow position. The poppet valves include piston seals consisting of cup-shaped elastomeric elements with a central domed bumper structure disposed freely at the piston head.

REFERENCES:
patent: 2661763 (1953-12-01), Renick
patent: 2780204 (1957-02-01), Barley
patent: 2932316 (1960-04-01), Stanton
patent: 3318202 (1967-05-01), Means
patent: 3388638 (1968-06-01), Brinkel
patent: 3439583 (1969-04-01), Stacey
patent: 3598148 (1971-08-01), Kroffke
patent: 4161136 (1979-07-01), Krieger
patent: 4203353 (1980-05-01), Burnham et al.
patent: 4267861 (1981-05-01), Roth
patent: 4393751 (1983-07-01), Kelley
patent: 4432385 (1984-02-01), Legris
patent: 4537220 (1985-08-01), Anderson

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