Self-cleaning filter assembly for solenoid-actuated valves

Details Self-cleaning filter assembly for solenoid-actuated valves Self-cleaning filter assembly for solenoid-actuated valves

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B01D 35/02 (2006.01) B01D 25/38 (2006.01) B01D 29/00 (2006.01) B01D 35/04 (2006.01) F16K 31/40 (2006.01)

Patent

CA 1174986

SELF-CLEANING FILTER ASSEMBLY FOR SOLENOID-ACTUATED VALVES ABSTRACT Disclosed is an improved self-cleaning filter assembly for use in a solenoid-actuated valve of the type having a fluid pressure-operated diaphragm to control opening and closing of the valve. Control fluid under pressure is admitted from an inlet chamber of the valve into a control chamber at one side of the diaphragm to maintain the valve in a closed position, and this fluid pressure in the control chamber is relieved by actuation of a solenoid to open the valve. The self-cleaning filter assembly comprises a rela- tively rigid filter element for filtering the control fluid and a plurality of scraper blades mounted for scraping dirt, grit, or other deleterious matter from the filter element each time the valve is opened or closed.

391010

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