Multivalve manifold interlock and control system

Fluid handling – With lock or seal – Locks against rotary motion

Patent

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Details

70DIG70, 1376371, 251 90, 251288, F16K 3514

Patent

active

044297114

ABSTRACT:
In the preferred and illustrated embodiment, a multivalve manifold control and interlock system is set forth. The multivalve manifold comprises three valves arranged within a valve body, wherein valve stems with optional handles are located above the valve body to be gripped and rotated. The valve body encloses three ball or plug valves. They are switched by 90.degree. rotation. Each stem supports a circular disk, and the three stems are equipped with three circular disks which interlock. Certain arcuate notches are cut in the circular disks. The arrangement of the notches limits the sequence in which the valves are opened and closed. Moreover, opening and closing is constrained to the sequence required for safe operation of the multivalve manifold. Further, a lock bar is incorporated, and is profiled to fit with the valve stems for locking.

REFERENCES:
patent: 599283 (1898-02-01), De Freitas
patent: 1309295 (1919-07-01), Magee
patent: 1898569 (1933-02-01), Pearson
patent: 2011824 (1935-08-01), Pearson
patent: 2371727 (1945-03-01), Andrews
patent: 2692617 (1954-10-01), Jensen
patent: 2884008 (1959-04-01), Elsdon
patent: 3448961 (1969-06-01), Enssle

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