Valve lock

Details Valve lock Valve lock

1993-01-19

1993-11-16

Schwadron, Martin P.

Fluid handling

With casing, support, protector or static constructional...

Guards and shields

251 90, 70177, 70179, 70185, F16K 3500

Patent

active

052614450

ABSTRACT:
A valve lock for valves wherein the valve stem is coupled to a valve actuator shaft and there is a spacing between the valve and valve actuator. A locking member is slidably receivable in the spacing and fixed against rotation so that a locking slot in the locking member engages a locking segment of the interconnected valve stem and valve actuator shaft. The locking member, in turn, can be releasably locked to prevent unauthorized or unintended use of the valve.

REFERENCES:
patent: 2364909 (1944-12-01), Murphy
patent: 4377178 (1983-03-01), Thompson
patent: 4709720 (1987-12-01), Russo

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