Control valve system for blowout preventers

Details Control valve system for blowout preventers Control valve system for blowout preventers

1982-01-11

1985-04-09

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Contracting chamber exhaust valve controlled by expanding...

91436, 251 1R, 251 1B, F15B 1304, F16K 31122

Patent

active

045094055

ABSTRACT:
A control valve system and method are disclosed for blowout preventers having an actuating piston for actuating the closing of the blowout preventer whereby the piston has an opening side and a closing side. The control valve system and method include a means for selectively directing fluid from the opening side of the actuating piston to the closing side of the actuating piston in order to reduce the fluid requirements for closing the blowout preventer and reduce installed horsepower requirements thereby.

REFERENCES:
patent: 1812587 (1931-06-01), Ellis
patent: 2800110 (1957-07-01), Haarmeyer
patent: 3033168 (1962-05-01), Ruhl
patent: 3036807 (1962-05-01), Lucky et al.
patent: 3044481 (1962-07-01), Regan
patent: 3299957 (1967-01-01), O'Neill et al.
patent: 3759144 (1973-09-01), Ikeda
patent: 4098341 (1978-07-01), Lewis
patent: 4349041 (1982-09-01), Bates
Fluid Power Handbook & Directory, 78/79, by the Editors of Hydraulics & Pneumatics, p. A/180.

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