Pressure and temperature relief valve and diaphragm valve
First Claim
1. A temperature and pressure responsive relief valve assembly comprising a housing including an inlet and an outlet, and a fluid passageway in said housing interconnecting said inlet and said outlet and including a valve stop, a pressure responsive flexible member in said passageway and including a peripheral edge fixed to said housing and an annular combination first valve member and valve seat defining an opening forming a portion of said passageway and being movable relative to said valve stop, a thermally responsive assembly movably mounted in said passageway and including a thermally responsive actuator and a second valve member movable in response to operation of said actuator and relative to said combined first valve member and valve seat for seating engagement between said second valve member and said combined first valve member and valve seat, and means in said passageway for biasing said combined first valve member and valve seat into engaged position on said valve stop and on said second valve member.
5 Assignments
0 Petitions
Accused Products
Abstract
A temperature and pressure responsive relief valve assembly preferably used in the cooling system of an internal combustion engine to control the rate of flow of a coolant fluid through the engine, which valve assembly comprises a housing having an inlet and an outlet, and a fluid passageway interconnecting the inlet and the outlet and including a valve seat, a pressure responsive diaphragm valve in the passageway and including a peripheral edge fixed to the housing and an annular combination valve member and valve seat defining an opening and forming a portion of the passageway and movable relative to the valve seat and movable toward the outlet in response to fluid pressure the inlet, a thermostat mounted in the passageway and including a valve member movable in response to operation of the thermostat, and a spring in the passageway for biasing the combination valve member and valve seat into a seated position on the valve seat and on the valve member, and a second spring for biasing the valve member into a seated position on the combination valve member and valve seat.
30 Citations
18 Claims
- 1. A temperature and pressure responsive relief valve assembly comprising a housing including an inlet and an outlet, and a fluid passageway in said housing interconnecting said inlet and said outlet and including a valve stop, a pressure responsive flexible member in said passageway and including a peripheral edge fixed to said housing and an annular combination first valve member and valve seat defining an opening forming a portion of said passageway and being movable relative to said valve stop, a thermally responsive assembly movably mounted in said passageway and including a thermally responsive actuator and a second valve member movable in response to operation of said actuator and relative to said combined first valve member and valve seat for seating engagement between said second valve member and said combined first valve member and valve seat, and means in said passageway for biasing said combined first valve member and valve seat into engaged position on said valve stop and on said second valve member.
- 10. A diaphragm valve for use in a pressure relief valve assembly including a housing having an inlet and an outlet, and a fluid passageway in the housing interconnecting the inlet and the outlet and including an outer valve stop, and an inner valve seat mounted in the passageway, said diaphragm valve comprising a flexible diaphragm adapted to be located within the passageway and including a peripheral edge adapted to be fixed to the housing, and an annular valve member on said flexible diaphragm and defining an opening forming a portion of the passageway and being movable relative to said outer valve stop and to said inner valve seat for seating engagement therewith.
- 16. A temperature and pressure responsive relief valve assembly comprising a housing including an inlet and an outlet, and a fluid passageway in said housing interconnecting said inlet and said outlet and including a valve stop, a pressure responsive flexible member in said passageway and including a peripheral edge fixed to said housing and an annular combination first valve member and valve seat defining an opening forming a portion of said passageway and being movable relative to said valve stop, a thermally responsive assembly movably mounted in said passageway and including a thermally responsive actuator extending through said opening and a second valve member movable in response to operation of said actuator and relative to said combined first valve member and valve seat for seating engagement between said second valve member and said combined first valve member and valve seat, means in said passageway for biasing said combined first valve member and valve seat into engaged position on said valve stop and on said second valve member, and means in said passageway for biasing said second valve member into a seated position on said combined first valve member and valve seat.
Specification