Valve unit

Details Valve unit Valve unit

1978-03-09

1979-10-30

Schwadron, Martin P.

Fluid handling

Systems

With flow control means for branched passages

137613, 13762565, 141117, 222108, F16K 2300, F15B 13044

Patent

active

041724712

ABSTRACT:
In a non-drip valve for a fluid flow line having a vacuum unit comprising supply chamber, a discharge chamber and a vacuum chamber connected to the discharge chamber to withdraw fluid therefrom when the forward flow is arrested, an improved control valve controlling the flow of fluid from a source to the supply chamber comprising a ball element operable between alternate positions, one of which admits fluid from the source of supply to the supply chamber and blocks the flow of fluid from the supply chamber to a return line, and the other of which blocks flow of fluids from the supply source to the supply chamber and simultaneously affords flow of fluid from the supply chamber to the return line, the position of said ball element being controlled by the armature of a solenoid.

REFERENCES:
patent: 3661183 (1972-05-01), Komaroff et al.
patent: 3886974 (1975-06-01), Bjorklund
patent: 4050477 (1977-09-01), Acar
patent: 4134428 (1979-01-01), Bjorklund

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