Pneumatic valve

Details Pneumatic valve Pneumatic valve

1983-02-02

1983-11-29

Walton, George L.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

73304R, 91402, 137392, 137565, 138 93, 138 94, 200 6105, 222 64, 307118, 340620, 361178, F17D 300, G05D 912

Patent

active

044175981

ABSTRACT:
A pneumatic valve system for sealing off the flow of a liquid at the intersection of two pipes, one of the pipes being vertically disposed with respect to the other pipe. A sensing probe senses liquid at a pre-established height in the vertically disposed height which signals a control system to activate the pneumatic valve system. An expandable, inflatable bladder is positioned from the vertically disposed pipe into the second pipe and is inflated, thereby sealing off the flow of liquid past the bladder. When normal fluid flow is to return, the bladder is deflated and positioned back into its original position within the vertically disposed pipe.

REFERENCES:
patent: 2029765 (1936-02-01), Durdin, Jr.
patent: 2188948 (1940-02-01), Huebner
patent: 2279257 (1942-04-01), Svirsky
patent: 2311197 (1943-02-01), Ahern
patent: 2514040 (1950-07-01), Eksergian
patent: 2797702 (1957-07-01), Martin
patent: 3540027 (1970-11-01), Rauth et al.
patent: 3726606 (1973-04-01), Peters
patent: 4203473 (1980-05-01), Roberson, Sr.
patent: 4351349 (1982-09-01), Minolti

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