Drain valve

Details Drain valve Drain valve

1976-07-21

1978-03-21

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

251342, 251350, F16T 100

Patent

active

040797449

ABSTRACT:
This invention relates to a drain valve and is particularly adapted for draining water or other liquid from the bowl of a filter for pneumatic systems. The valve includes a bendable tubular body of flexible material and there is a poppet for normally closing a drain passage through the body. The valve has a stem in the passage which is deflectable by manual bending of the body to unseat the valve for opening the drain passage. There is a means for holding the valve seated when the body is not bent, and a portion of the passage constantly bypasses such means to permit drainage flow when the valve is unseated, regardless of whether there is pressure in the bowl.

REFERENCES:
patent: 1944770 (1934-01-01), Svorcina
patent: 2597483 (1952-05-01), Head
patent: 2769454 (1956-11-01), Bletcher
patent: 2869764 (1959-01-01), Collins
patent: 2886284 (1959-05-01), Wheatley
patent: 3108721 (1963-10-01), Nebinger
patent: 3450146 (1969-06-01), Edwards
patent: 3722760 (1973-03-01), Hug
patent: 3758007 (1973-09-01), Rosen

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