Shut-off valve for evacuation and fill without energizing valve

Details Shut-off valve for evacuation and fill without energizing valve Shut-off valve for evacuation and fill without energizing valve

1995-12-05

1997-09-16

Ferensic, Denise L.

Fluid handling

With repair, tapping, assembly, or disassembly means

With holding means functioning only during transportation...

137 67, F16K 4300

Patent

active

056669917

ABSTRACT:
A shut-off valve used in a fluid transmission line for the evacuation and fill of a fluid without the need for first energizing the valve to keep the valve in an open position by using a collar on the shaft of said valve which dissolves or disintegrates automatically upon contact with the fluid for a predetermined length of time such that the valve returns to its normal control functions.

REFERENCES:
patent: 3586018 (1971-06-01), Bogardh

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