Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1977-10-17
1979-10-23
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
13751627, 137529, 137538, F16K 1502
Patent
active
041717120
ABSTRACT:
A venting valve connected to the interior of the fuel tank has a sliding piston and a plurality of springs which hold the piston in different operative positions dependent upon the amount of pressure within the tank.
REFERENCES:
patent: 731218 (1903-06-01), Perkins
patent: 2016278 (1935-10-01), Ehlers
Nilson Robert G.
Paccar Inc.
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