Water sensitive probe valve for use with a gas leak detector

Details Water sensitive probe valve for use with a gas leak detector Water sensitive probe valve for use with a gas leak detector

1979-12-26

1981-10-13

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

137550, 73 405R, F16K 1304

Patent

active

042942764

ABSTRACT:
A water sensitive probe valve shuts off upon detecting water to protect a gas leak detector. A barrel and a cap of the probe valve secure together through a coupling ring and house a normally open valve that is spring biased toward a closed position against a seat of the cap. A water soluble band stretched between a hook on the valve and an anchor holds the valve open. The presence of water dissolves the band and frees the valve to close under the bias of the spring against the seat and prevent water from entering and damaging the gas indicator. A lock keeps the valve open during arming with the water soluble band. The anchor valve and lock all mount on the coupling for ease of disassembly for cleaning and arming. A gas duct on the coupling extends out from the body of the coupling to avoid water entering the duct by runoff across a face of the coupling.

REFERENCES:
patent: 3078862 (1963-02-01), Maly
patent: 3266668 (1966-08-01), Davis
patent: 3367503 (1968-02-01), Topol
patent: 3472253 (1969-10-01), Herscher

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