Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1986-11-21
1988-09-27
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
1374939, 137509, F16K 1718
Patent
active
047734442
ABSTRACT:
A dual directional relief valve including a chamber within which is mounted a piston or valve member. The valve member is biased into a closed position covering and closing the open ends of two conduits. In the preferred embodiment, the conduits are respectively connected to opposite sides of a pump and the open ends of the conduits are concentrically positioned relative to each other. In operation and should dangerously high pressure develop on either side of the pump, the valve member will be opened and the high pressure relieved to pass harmlessly from one conduit to the other through the chamber. The valve member preferably has two surface portions of equal area covering the open ends of the conduits wherein the relief valve can be set to open when a predetermined pressure is exceeded in either conduit.
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Bleth Joel J.
Tormaschy Williard R.
Carson W. Scott
Nilson Robert G.
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