Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1987-03-05
1988-08-02
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
55304, 55385C, 137522, 137588, 220204, 417155, 417196, F16K 2400
Patent
active
047608633
ABSTRACT:
A pressure vacuum valve arrangment for the fitting to the vent pipe of a tank for the storage of volatile fuel comprises a first valve to open on increasing pressure of the tank to allow escape of air and vapors from the tank and a second valve adapted to open on decrease of pressure in the tank due to withdrawal of fuel to allow air to enter the tank. To the top is fitted a sleeve forming a venturi action to disperse the vapors into the atmosphere, and to the entry of the second valve is provided a bag filter to prevent dust entering the tank.
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Hepperle Stephen M.
Schwadron Martin P.
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