Thermally responsive valve

Details Thermally responsive valve Thermally responsive valve

F - Mech Eng,Light,Heat,Weapons

01

P

236/6

F01P 7/16 (2006.01) F02P 5/10 (2006.01) F16K 31/00 (2006.01) G05D 23/13 (2006.01)

Patent

CA 1219573

ABSTRACT A three-port vacuum valve (10) having a thermally responsive actuator (38)n and a moveable valve member (62) with a single seal ring (66) thereon. A vacuum signal output port (24) is disposed between spaced primary (26) and secondary (22) vacuum source ports. A first (74) and a second (68) annular tapered valve seats are disposed in opposing relationship closely spaced adjacent said output port with said seal ring disposed therebetween. The valve seats are spaced such that upon said actuator experiencing a preselectd temperature the seal ring is unseated from the second valve seat and is between the valve seats. Upon the actuator experiencing a given temperature differential from said preselected temperature, said seal ring seats against said first valve seat.

446920

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