Leonard R Nemeth

US Patent:

56877544, Nov 18, 1997

Filed:

Aug 15, 1996

Appl. No.:

8/698569

Inventors:

Leonard R. Nemeth - Northfield OH
William S. Stumphauzer - Elyria OH
Hugh F. Groth - Richfield OH

Assignee:

Precision Pneumatics, LLC - Lorain OH

International Classification:

F16K 3134

US Classification:

137179

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. The pilot valve is in communication with a check valve which releases air pressure into the interior of the reservoir to rapidly expel water through the drain valve when the pilot valve is opened.