Zero-spill double ball valve powered emergency release coupling

Details Zero-spill double ball valve powered emergency release coupling Zero-spill double ball valve powered emergency release coupling

1994-11-10

1996-04-16

Fox, John C.

Fluid handling

Systems

Flow path with serial valves and/or closures

13761406, F16L 2900

Patent

active

055073131

ABSTRACT:
An improved double ball valve powered emergency release coupling includes two fluid-carrying conduits, each having a ball or plug valve received therein, which are prevented from being decoupled unless both ball or plug valves are moved to a closed position prior to decoupling. The improved coupling prevents inadvertent spilling during decoupling. A mechanical or hydraulic actuator corresponding to each valve element is provided for sequentially rotating each valve element between opened and closed positions.

REFERENCES:
patent: 4335747 (1982-06-01), Mitsumoto et al.
patent: 4515182 (1985-05-01), LeDevehat
patent: 4664149 (1987-05-01), Fremy

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