Flush valve

Details Flush valve Flush valve

1973-07-13

1976-02-03

Rosenthal, Arnold

Valves and valve actuation

Tube compressors

Fluid pressure actuated

251 43, 251 46, 251 611, F16K 31385

Patent

active

039360288

ABSTRACT:
In one embodiment, a valve body contains a flexible valve sleeve between a fluid inlet and a fluid outlet, and an annular chamber around the sleeve connects with the inlet so that fluid pressure in the chamber normally compresses the sleeve to a closed position. A manually operated pilot valve reduces pressure in the chamber so that the sleeve is expanded by fluid pressure from the inlet to open the valve.
In another embodiment, a valve body contains a flexible diaphragm which normally closes an inlet valve port and defines a pressure chamber isolated from a fluid outlet. A manually operated pilot valve reduces pressure in the chamber so that the diaphragm is unseated from the inlet port by fluid pressure from the inlet to open the valve.

REFERENCES:
patent: 1269721 (1918-06-01), Kuntny
patent: 1731571 (1929-10-01), Heare
patent: 2026916 (1936-01-01), Smith
patent: 2217166 (1940-10-01), Groeniger

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