Anti-siphon valve

Details Anti-siphon valve Anti-siphon valve

1995-02-28

1997-01-07

Chambers, A. Michael

Fluid handling

Processes

Involving pressure control

137565, 417279, 417300, F17D 114, B67D 540

Patent

active

055906753

ABSTRACT:
A method of valving a flow of pumped fluid, to prevent siphoning of the flow when the pump is stopped, including the steps of filling a chamber with fluid, directing a small flow of pumped fluid into the chamber to increase its volume, opening a main flow valve by the increase in chamber volume, providing a leak in the chamber to reduce the volume of fluid therein when the small flow of pumped fluid is terminated, and closing the main flow valve by the decrease in chamber volume.

REFERENCES:
patent: 2795238 (1957-06-01), Hirsch
patent: 3183839 (1965-05-01), Brunson et al.
patent: 3547559 (1970-12-01), Tittmann
patent: 3663126 (1972-05-01), Langosch
patent: 3723025 (1973-03-01), Coakley

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