Disc-type check valve

Details Disc-type check valve Disc-type check valve

1981-01-22

1983-01-25

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

13753319, F16K 1502

Patent

active

043698085

ABSTRACT:
The valve comprises a bored housing formed of two segments. A discrete annular seat member is positioned on an annular shoulder formed in one segment. A guide member, comprising spaced apart legs and an apertured end wall is positioned on the seat member. A cylindrical, resilient plastic disc is positioned to seat against the seat member to close off flow through the bore and to slide within the guide member when unseated. Flow bypasses the unseated disc by moving through the spaces between the guide member legs and out through the end wall aperture. The plastic disc provides a particularly good seal and thus erosion of the seat is diminished. Having the seat member removable reduces reconditioning costs.

REFERENCES:
patent: 325074 (1885-08-01), Gordon
patent: 948169 (1910-02-01), Garber
patent: 966390 (1910-08-01), Elder
patent: 2021351 (1935-11-01), Carson
patent: 2649277 (1953-08-01), Blackford
patent: 2722232 (1955-11-01), Roche
patent: 3084709 (1963-04-01), Flick
patent: 3620653 (1971-11-01), Gaylord

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