Safety valve

Details Safety valve Safety valve

1974-11-13

1976-07-27

Cline, William R.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137463, 137444, 137613, 13761419, F16K 1704

Patent

active

039714039

ABSTRACT:
A safety valve for fluids, comprising on the upstream side a first valve member openable to a degree dependent on the fluid throughput, and, on the downstream side, a second fully-opening valve member capable of being closed sharply by return mechanism and coupled to the first clack through mechanical linkage uncoupling of which is controlled by the position of the first valve member which depends on a predetermined minimum flow rate, the uncoupling causing return motion and sharp closure of the second valve member. The safety valve is useful in the delivery of a fluid where said delivery must be stopped if the flow rate of fluid falls under a predetermined limit.

REFERENCES:
patent: 443326 (1890-12-01), Leverich
patent: 1179462 (1916-04-01), Shaffer
patent: 1207135 (1916-12-01), Chism
patent: 1311713 (1919-07-01), Richardson
patent: 1954927 (1934-04-01), Fuller
patent: 2464456 (1949-03-01), McGillis et al.
patent: 2847181 (1958-08-01), Muller

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