Check valve assembly

Details Check valve assembly Check valve assembly

1980-01-21

1981-09-01

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137539, 13751629, F16K 1504

Patent

active

042866227

ABSTRACT:
The invention resides in a check ball valve assembly including a main valve body member taking the form of a rigid combination of a hollow cylindrical body element and a pipe coupling member at one end of the body element. The main valve body contains therein a movable ball valve member. In this valve assembly a further or second pipe coupling member is detachably connected at the opposite end of the body element. A resilient or elastomeric, double-functioning sealing member is positioned between the body element and the second pipe coupling and is so shaped and arranged to execute at its inside a detachable sealing function with the ball valve member and at the same time to execute at its outside a sealing function between the main valve body and the detachable pipe coupling member. The valve assembly further includes a retainer ring positioned stationarily behind the sealing member when seen in the regular fluid passage direction of the valve assembly. The retainer has a central tapered, fluid passage allowing bore, for engagement with the valve ball member for preventing an excess pressure contact of the latter with the sealing member. In the valve assembly, there are no O rings fitted therein.

REFERENCES:
patent: 720100 (1903-02-01), Bashlin
patent: 2673062 (1954-03-01), Cornelius
patent: 2790460 (1957-04-01), Radd
patent: 3346008 (1967-10-01), Scaramucci

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