Relief valve

Details Relief valve Relief valve

1979-03-08

1981-01-27

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

137226, 137508, 137550, 152427, F16K 1726

Patent

active

042469309

ABSTRACT:
A relief valve, particularly adapted for use on racing car tires, which pops open to relieve at a set pressure and then reseats at a pressure slightly lower than the opening pressure. The valve includes a diaphragm (28) a diaphragm retaining plate (36) which has a resilient sealing element (39) molded or otherwise attached to it, a valve seat attached to the center of the diaphragm, and a compression spring (26) acting on the diaphragm to bias the valve seat against the resilient sealing element. When the valve pops open against the spring force, the area above the diaphragm is exposed to a venting pressure, via a port formed through the valve seat and through the diaphragm, which is higher than atmospheric and thus adds to the spring force, resulting in a resealing pressure which is slightly less than the opening pressure. In a second embodiment, a stem member (161) extends through the valve seat (130) and the diaphragm (128) and through the diaphragm retaining member (136) to provide means to pressurize the container to be relieved through an external source, by means of a valve core (175) received within the stem.

REFERENCES:
patent: 1156328 (1915-10-01), Thayer
patent: 1258114 (1918-03-01), Hayward
patent: 2991821 (1961-07-01), Williams
patent: 3422840 (1969-01-01), Bryant
patent: 3426787 (1969-02-01), Fuller
patent: 3504697 (1970-04-01), Colgan
patent: 4044793 (1977-08-01), Krueger

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