Flow control valve for a dispensing system

Details Flow control valve for a dispensing system Flow control valve for a dispensing system

1988-09-01

1989-12-26

Rosenthal, Arnold

Fluid handling

Processes

25112907, 25112908, 251282, F16K 3106

Patent

active

048891487

ABSTRACT:
A liquid flow control solenoid valve for a beverage dispensing system wherein a rolling diaphragm seal is used between a needle valve and the valve body and the increased hydraulic forces on the needle valve caused by the rolling diaphragm are balanced by using a needle valve that is tapered in a direction to create a force on the needle valve in the direction opposite to the force created by the rolling diaphragm, so that the hydraulic forces are balanced and a smaller solenoid can be used to operate the valve.

REFERENCES:
patent: 4493474 (1985-01-01), Ohyama
patent: 4582294 (1986-04-01), Fargo
patent: 4643394 (1987-02-01), Shimura et al.
patent: 4662604 (1987-05-01), Cook

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