Hydraulic disconnector

Details Hydraulic disconnector Hydraulic disconnector

1993-02-12

1994-11-15

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137107, E03C 110

Patent

active

053638751

ABSTRACT:
A flow disconnector has an intermediate chamber connected between inlet and outlet check valves. A diaphragm controls a venting valve for the intermediate chamber which is designed to empty the intermediate chamber when the difference between inlet pressure and intermediate chamber pressure becomes too small. To prevent unnecessary emptying of the intermediate chamber, a pressure stabilizer is connected between the inlet and the intermediate chamber. The stabilizer holds the pressure in the intermediate chamber below the inlet pressure by an amount sufficient to prevent unnecessary emptying of the intermediate chamber.

REFERENCES:
patent: 4090527 (1978-05-01), Sutherland
patent: 4232704 (1980-11-01), Becker et al.
patent: 4478236 (1984-10-01), Neuzeret et al.
patent: 4573491 (1986-03-01), Arens et al.
patent: 4745946 (1988-05-01), Kern
patent: 4895180 (1990-01-01), Vollmer

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