Lockable regulatory valve

Details Lockable regulatory valve Lockable regulatory valve

1976-10-15

1979-02-20

Schwadron, Martin P.

Valves and valve actuation

With means for blocking or disabling actuator

Attachments

251208, 251285, 251288, F16K 3500

Patent

active

041402979

ABSTRACT:
An adjustable flowmeter regulatory valve lockability device, for adjustably locking a fixed maximum flow-rate setting or position of a valve, and effectively concealing its adjustability nature providing that a user may conveniently vary the flow-rate only up to pre-set maximum flow rate, but permitting a supplier, by tools and special know-how, to pre-set or lock the device to permit whatever pre-selected maximum flow-rate has been specified.

REFERENCES:
patent: 1104918 (1914-07-01), Mouat
patent: 1625916 (1927-12-01), Trottier
patent: 2512987 (1950-06-01), Young
patent: 2536275 (1951-01-01), Godshall
patent: 2628588 (1953-02-01), Mehler
patent: 2982148 (1961-05-01), Jackson et al.
patent: 3397863 (1968-08-01), Bell
patent: 3519014 (1970-07-01), Doremus et al.
patent: 3929317 (1975-12-01), Cohn et al.

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