Control valve and method of controlling material flow through a

Details Control valve and method of controlling material flow through a Control valve and method of controlling material flow through a

1988-07-14

1990-05-15

Fox, John

Valves and valve actuation

With restrictor in parallel to main valve

25112907, 25112922, F16K 3102

Patent

active

049251554

ABSTRACT:
A device and method for regulating the flow of material through a conduit. The device includes a material flow path having a disk member for closing the material flow path, a material bleed path through the disk member when closed and a member for moving the disk and opening the material flow path. The device can further include an additional piston member for closing the material flow path at a secondary position and having an additional material bleed path therethrough and an additional member for moving the piston and opening the flow path as well as a sleeve member movable within the device for releasing material pressure from both within the device and ahead of the device.

REFERENCES:
patent: 2306904 (1942-12-01), Ray
patent: 2910249 (1959-10-01), Gunkel
patent: 2922614 (1960-01-01), Nickells
patent: 3256900 (1966-06-01), Estes et al.
patent: 4573441 (1986-03-01), Wietschorke et al.
patent: 4632358 (1986-12-01), Orth et al.

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