Safety valve unions

Details Safety valve unions Safety valve unions

1981-05-04

1983-08-09

Chambers, A. Michael

Valves and valve actuation

With correlated flow path

Flow path joint interlocked with valve or actuator

251 895, 251 99, 251152, F16L 3728

Patent

active

043974457

ABSTRACT:
The present invention relates to safety valve unions wherein the rotating plug is shaped so as to retain when it is in open position the terminal end of the male element which is released when said plug has been brought into closed position. The opposite faces of the boss and of the pivoting lever are shaped to provide an intermediate position in which the plug is closed, the downstream pipe of the male element is decompressed through a channel and a vent in register, and the terminal is still locked in the bore. The invention is more particularly applicable to the hydraulic or pneumatic accessory industry.

REFERENCES:
patent: 1697278 (1929-01-01), Kendrick
patent: 2493271 (1950-01-01), Smith et al.
patent: 3423063 (1969-01-01), German
patent: 4057883 (1977-11-01), Paptzun

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