Fluid handling – Systems – Multi-way valve unit
Patent
1990-01-29
1992-11-10
Fox, John C.
Fluid handling
Systems
Multi-way valve unit
251 65, F16K 3108
Patent
active
051615789
ABSTRACT:
A valve is provided with one inlet and two outlets with one of the outlets being normally closed by a valve in the form of a film disc carried by a flexible blade. A magnetic pad secured to the blade is attracted by the proximity of an actuator carrier magnetic element to cause the flexing of the blade to open the normally closed outlet and to close the normally open outlet. The actuator may be either thermally or electrically actuated and is suitable to override a bleed thermostat to permit warm-up of an overcooled area or to cause a switchover in operation between a heating and cooling mode by connecting the appropriate bleed thermostat so as to control the inflation of the bellows.
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Magnetically Actuated Pneumatic Valve, Abell and Shakib, IBM Technical Disclosure Bulletin, vol. 12, No. 12, May 1970.
Coleman Milton H.
Dreibelbis Richard C.
Carrier Corporation
Fox John C.
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