F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/29
F16K 1/22 (2006.01) F16K 1/228 (2006.01) F16K 25/00 (2006.01)
Patent
CA 1176225
ABSTRACT OF THE DISCLOSURE This invention relates to an improved valve seal assembly for rotary fluid control valves of the butterfly type which will seal tightly at high pressures, will not blow out under high system pressures, and which is operable with a relatively low torque. A valve-closure disc is mounted for rotation between an open position, in which the disc lies substantially parallel to the axis of the fluid flow channel through the valve, and a closed position, in which the disc lies perpendicularly to that axis. The disc is mounted for rotation on a valve stem which is attached to one side of the disc. The disc cooperates with an annular, flexible seat circumscribing the fluid flow channel, for shutting off fluid flow through the channel when the disc is in the closed position. The internal fluid pressure acting upon the valve is used to enhance the contact pressure between the flexible seat and both the valve body and valve disc, regardless of the direction in which fluid pressure is applied.
392152
Masoneilan International Inc.
Shapiro Cohen
LandOfFree
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