Electromagnetic control valve responsive to positive and negativ

Details Electromagnetic control valve responsive to positive and negativ Electromagnetic control valve responsive to positive and negativ

1997-05-06

1998-12-29

Ferensic, Denise L.

Valves and valve actuation

Electrically actuated valve

Including solenoid

137526, 13753317, 1374938, 1374937, F16K 3102

Patent

active

058531629

ABSTRACT:
An electromagnetic control valve having a coil housing and a valve housing provided with a connector for inlet into the valve housing of a medium whose pressure is to be controlled. The valve housing has a chamber connected to ambient atmosphere and a pressure valve controlling communication between the chamber and the medium introduced into the valve housing. A by-pass channel is connected to ambient atmosphere, and a suction valve controls communication between the by-pass channel and the medium introduced into the valve housing. The pressure valve comprises a valve plate facing a valve seat in the valve housing for selectively opening and closing an opening in the valve seat to respectively connect and disconnect the medium introduced into the valve housing from the chamber. The valve plate is slidably supported by a basket and is biassed by a spring against stops provided on the basket. An electromagnet in the coil housing acts to displace the basket when the electro-magnet is energized to apply the valve plate against the valve seat and cause the valve plate to be lifted off the stops. A predetermined pressure difference for the opening of the pressure and suction valves can be established within close tolerances.

REFERENCES:
patent: 1423679 (1922-07-01), Pavitchich
patent: 3473780 (1969-10-01), Harms
patent: 3800793 (1974-04-01), Marrese et al.
patent: 4379470 (1983-04-01), Reutter
patent: 4674529 (1987-06-01), Ferguson
patent: 5048560 (1991-09-01), Jannotta et al.

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