Adjustable check valve

Details Adjustable check valve Adjustable check valve

1977-04-22

1978-09-12

Cline, William R.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137514, 1375395, 137606, 1376142, F16K 31363, F16K 1504

Patent

active

041129598

ABSTRACT:
A smoothly acting adjustable fluid flow check valve comprises an adjustably spring biased ball valve member, a piston upstream of the ball valve member and having a stem acting as an actuator for the ball valve member and as a further valving member actually controlling the volume of fluid passing through the check valve, the piston moving in a cylinder surrounding the stem so as to damp the movement of the latter.

REFERENCES:
patent: 2044629 (1936-06-01), Parker
patent: 2566774 (1951-09-01), Otis
patent: 2646066 (1953-07-01), Nemetz
patent: 2969084 (1961-01-01), Raymond
patent: 3114387 (1963-12-01), Barkan et al.
patent: 3234959 (1966-02-01), Feinberg
patent: 3587630 (1971-06-01), Parquet
patent: 3665957 (1972-05-01), Fulmer et al.
patent: 3747635 (1973-07-01), Garamy

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