Pressure-operated flow control valve and molding method

Details Pressure-operated flow control valve and molding method Pressure-operated flow control valve and molding method

1982-02-16

1984-08-14

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

13751625, 137528, 137556, 123 25L, F16K 1500

Patent

active

044650957

ABSTRACT:
A pressure-actuated flow control valve. A valve housing has an inlet and an outlet with first and second spaced-apart seats between them and a permanent magnet on the inlet side of the first seat, which is closed to the inlet. A ferromagnetic ball in between the seats is urged by said magnet toward the first seat to check backflow. The valve responds to pressure differential to move the ball away from the first seat and toward the second seat. Between the seats, the passage widens toward the second seat. There may be a needle valve on the outlet side of the valve enabling controlling the flow therethrough.

REFERENCES:
patent: 1611611 (1926-12-01), Russell
patent: 2204340 (1940-06-01), Bradshaw
patent: 2597952 (1952-05-01), Rosenlund
patent: 3076417 (1963-02-01), Rhodes et al.
patent: 3143125 (1964-08-01), Stelzer
patent: 4104004 (1978-08-01), Graef
patent: 4210174 (1980-07-01), Eross
patent: 4270508 (1981-06-01), Lindberg
patent: 4331177 (1982-05-01), Makishima

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