F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/108, 236/7
F16K 11/00 (2006.01) F02D 37/02 (2006.01) F02M 25/07 (2006.01) F16K 31/00 (2006.01)
Patent
CA 1128909
ABSTRACT The invention relates to a four-port thermally re- sponsive valve for valving two normally closed fluid ports and one pair of normally open fluid ports in response to predetermine temperatures. A single valve member is movably contained within a housing passageway and spring biased in a first position so that a sealing surface at each end of the valve member is re- spectively engageable with and spaced from corresponding seating surfaces in the passageway for achieving initially open or closed valved conditions between the individual ports in each pair. A centrally located seal ring mounted in the housing passageway and surrounding the valve member isolates one pair of fluid ports from a second pair of fluid ports when the valve member is moved to a second position thereby permitting three valving functions to be attained with one device. When pre- determined temperatures are encountered, a thermally responsive actuator connected to the valve member by a rod overcomes the biasing force generated by the spring and moves the valve member to the second position, valving substantially simultaneously each; pair of fluid ports.
310838
Corporation Eaton
Macrae & Co.
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