Liquid level control apparatus and method

Details Liquid level control apparatus and method Liquid level control apparatus and method

1984-09-25

1985-10-01

Walton, George L.

Fluid handling

Processes

137270, 137390, 137413, 137416, 137 85, F16K 3134

Patent

active

045439737

ABSTRACT:
A pneumatic liquid level control apparatus and method providing both a snap-actor mode and a throttling mode by rotating a control means on the apparatus. The control means has a reciprocating valve means mounted inside which is operative in the snap-actor mode and which is inoperative when the control means is rotated to the throttling mode. The control means is mounted on the apparatus housing so that it can be moved between its snap-actor mode and its throttling mode by merely loosing screws for affecting the movement and then tightening the screws to begin operation.

REFERENCES:
patent: 2649771 (1953-08-01), Parks
patent: 3088485 (1963-05-01), Hanssen
patent: 3120241 (1964-02-01), Parks
patent: 3413997 (1968-12-01), Taylor
patent: 3840044 (1974-10-01), Harris et al.
Pending U.S. patent application Ser. No. 537,783, Glasgow, et al.
The Wellmark Company, Oklahoma City, Oklahoma.
Safety Equipment, Inc., Tulsa, Oklahoma.

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