Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1980-12-15
1982-10-26
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
137553, 13762566, F16K 3700
Patent
active
043556582
ABSTRACT:
There is disclosed an apparatus for manually locking a pilot valve in an in-service position, independent of an actuating, or pilot, fluid pressure, so long as such pilot fluid pressure is below a predetermined amount. The device includes a valve manipulating knob attached to the exterior end of the valving element for manually shifting the element from a normally closed position to the in-service position. The knob includes an L-shaped member which conforms to the contour of the knob, and is adapted to pivot toward the valve body and lock the valving element out in the "in-service" position, or the pilot "bypass" position. This pivotal member includes an indicating surface visible from the front when the valving element is locked in the "bypass" position. The knob locking member is to be used in conjunction with a frontfacing pressure gauge having a multi-colored face and a rotating disc thereon to indicate specific pressure ranges by displaying various colors through an aperture in the disc. By glancing at the position of the indicating surface and the color displayed, an operator can readily determine the functional position of a pilot valve controlled motor valve.
REFERENCES:
patent: 3511276 (1970-05-01), Jedden et al.
patent: 3823739 (1974-07-01), McMullen
patent: 3878862 (1975-04-01), Blanton
patent: 3943974 (1976-03-01), Connelly et al.
patent: 4017053 (1977-04-01), Wells et al.
patent: 4121615 (1978-10-01), Bergeron
patent: 4207924 (1980-06-01), Peters
patent: 4239058 (1980-12-01), Peters
patent: 4256141 (1981-05-01), Peters
Chambers A. Michael
U.S. Industries Inc.
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