Hung diaphragm solenoid valve

Details Hung diaphragm solenoid valve Hung diaphragm solenoid valve

1988-02-05

1989-11-14

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 38, 25112915, F16K 31385

Patent

active

048802050

ABSTRACT:
A solenoid valve of the hung diaphragm type includes a diaphragm assembly having a pilot valve seat mounted for movement toward and away from a main valve seat in a valve body, a plunger assembly consisting of a valve disc holder reciprocably mounted in the pole piece of the electromagnetic valve resiliently supports a valve disc for cooperation with the pilot valve seat, being actuated by a plunger slideably mounted in an enclosure tube. The valve holder is biased to an upper position and a pickup extension spring is coupled between the valve holder and diaphragm valve assembly to lift the latter from the main valve seat. A necked down end of the valve holder prevents abrasion at the edge of the pole piece while a groove in the actuating face of the plunger prevents excessive distortion of the end of the pole piece due to repetitive impacts.

REFERENCES:
patent: 3208716 (1965-09-01), Rolfe
patent: 3738607 (1973-06-01), Peruglia
patent: 3994318 (1976-11-01), Ishagaki
patent: 4082116 (1978-04-01), Stampfli
patent: 4102526 (1978-07-01), Hargraves
patent: 4469134 (1984-09-01), Kanai et al.
patent: 4558498 (1985-12-01), Satoh
patent: 4561632 (1985-12-01), Hugler
patent: 4577661 (1986-03-01), Melrose

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