Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1977-07-12
1979-01-16
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
137853, F16K 1514, F16K 1718
Patent
active
041344243
ABSTRACT:
A bi-directional fluid flow control valve is provided with a spool-like valve body with a circumferential relief in its periphery bounded by a seal disk and by a reduced-diameter portion of the valve body, with a substantially tubular, elastic membrane stretched over the aforementioned portion and the seal disk, spanning the relieved portion. A flow channel penetrates the valve body centrally from the end closest to the reduced-diameter portion, and communicates with said relief via radial passages. Pressure differentials in either sense across the tubular membrane distort the membrane in such a manner that a flow passage is opened across the valve. When the pressure in the relieved groove is greater than on the outside of the membrane, the latter lifts from the seal disk. When the external pressure is greater, the membrane collapses into the relief groove, allowing flow through channels milled in the inner face of the seal disk.
REFERENCES:
patent: 3298391 (1967-01-01), Savage
patent: 3384113 (1968-05-01), Pennisi
patent: 3527551 (1970-09-01), Kutik
Gunzler Thomas
Zeyra Abraham
Gunzler Thomas
Nilson Robert G.
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