Ball valve lockout mechanism

Details Ball valve lockout mechanism Ball valve lockout mechanism

1991-02-25

1992-09-01

Chambers, A. Michael

Fluid handling

With lock or seal

Locks against rotary motion

137382, 70180, F16K 2708

Patent

active

051431149

ABSTRACT:
A lockout mechanism for holding a ball valve in a closed condition for prolonged periods, e.g. while machinery that is supplied with pressurized fluid through the valve is being subjected to maintenance operations. The lockout mechanism indirectly provides a safety feature for the workman while he is working on the machinery.

REFERENCES:
patent: 961959 (1910-06-01), Herfurth
patent: 999983 (1911-08-01), Gardner
patent: 1040040 (1912-10-01), Shepard
patent: 1158631 (1915-11-01), Caldwell
patent: 1293095 (1919-02-01), Hill
patent: 1348364 (1920-08-01), Koebel
patent: 3960168 (1976-01-01), Plympton

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