Low inertia check valve

Details Low inertia check valve Low inertia check valve

1983-06-29

1988-07-26

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137854, F16K 1514

Patent

active

047593857

ABSTRACT:
A low inertia springless check valve suitable for operation at high frequencies in a hot environment against a high cyclic back pressure with a relatively constant low input pressure, such as in an automotive engine exhaust air induction system. The valve has a circular elastomeric diaphragm mounted on a supporting frame by means of a retainer disk, a fastener and a diaphragm limiter. A central portion of the diaphragm is compressed between the disk and limiter to cause the originally flat diaphragm to become dished and biased towards the valve seat. The limiter is designed to stabilize, in the flow direction, a portion of the diaphragm extending along the entire length of an adjacent diameter of the diaphragm. The retainer disk also functions in part as a diaphragm motion limiter in the check direction.

REFERENCES:
patent: 1807029 (1931-05-01), Dunning
patent: 2777464 (1957-01-01), Mosely
patent: 3954121 (1976-05-01), Kardos
patent: 4141379 (1979-02-01), Manske
patent: 4229832 (1980-10-01), Dickson, Sr.
patent: 4319452 (1982-03-01), Morita et al.

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