Gate valve

Details Gate valve Gate valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/74

F16K 3/00 (2006.01) F16K 3/02 (2006.01) F16K 3/18 (2006.01) F16K 25/00 (2006.01)

Patent

CA 1283897

Abstract A gate valve having a body with a valve chamber therein, an inlet passage through the body into the valve chamber, an outlet passage through the body into the valve chamber, a gate positioned within the chamber and having an opening therethrough, a body sealing surface surround- ing the openings of each of the inlet and outlet passages within the passages within the chamber, a seat ring positioned between the gate and each of the body sealing surfaces, means for urging the seat rings against their body sealing surfaces, resilient seals between each seat ring and its body sealing surface near the inner and outer diameter of each ring, means for sealing between the gate and the seal rings, and means for moving said gate in said chamber to close and open flow through said valve. The means urging the seat rings against their body sealing surfaces in one form includes wedges positioned at the side of the gate engaged between the two seat rings and in another form includes springs positioned at the sides of the gate engaged between the two seat rings.

498923

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