Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1987-10-13
1988-05-10
Cohan, Alan
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
1374939, 137538, 137540, F16K 2400
Patent
active
047428449
ABSTRACT:
A flow-metering valve assembly is provided for vehicle fuel tanks. The assembly includes a valve housing having an interior wall configured to define a chamber having an inlet and an exhaust outlet. The interior wall provides a first flow-metering surface situated in close proximity to the outlet. A spring-biased pressure-relief element is situated in the chamber and includes a valve member having an inner surface confronting the inlet and an upstanding skirt attached to the valve member. The skirt has a distal portion extending in an outward direction toward the outlet means to provide a second flow-metering surface. The first and second surfaces cooperate to define a variable flow-metering orifice therebetween. The second flow-metering surface is moved in relation to the first flow-metering surface in response to relative movement of the valve member and the valve seat to vary the size of the variable flow-metering orifice so that the flow of pressurized fuel vapor through the variable flow-metering orifice is metered in accordance with a predetermined specification.
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Cohan Alan
Rivell John
Stant Inc.
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