Automatic drain valve

Details Automatic drain valve Automatic drain valve

1994-05-17

1995-05-23

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137413, F16K 3134

Patent

active

054172373

ABSTRACT:
An automatic float-activated drain valve for a liquid reservoir used in the accumulation of condensable materials and other contaminants from pneumatic systems and the like. The float is connected by a flexible tether to a lever arm which opens a pilot valve when the reservoir fills with water and the float moves to the top of the reservoir. The pilot valve permits air pressure to flow to an actuator which opens the drain valve.

REFERENCES:
patent: 3807431 (1974-04-01), Svanteson
patent: 3993090 (1976-11-01), Hankinson
patent: 4444217 (1984-04-01), Cummings et al.
patent: 4562855 (1986-01-01), Cummings et al.
patent: 4574829 (1986-03-01), Cummings et al.
patent: 4779640 (1988-10-01), Cummings et al.
patent: 5004004 (1991-04-01), Cummings

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