Automatic water or liquid safety valve assembly

Details Automatic water or liquid safety valve assembly Automatic water or liquid safety valve assembly

1980-03-18

1981-12-15

Schwadron, Martin P.

Fluid handling

With leakage or drip collecting

73313, 137392, 137429, 200 6104, 200 84R, 307118, 361178, F16K 3300, H01H 2904

Patent

active

043054200

ABSTRACT:
An automatic water safety valve assembly having sensors adapted to be placed in various locations on the floors of a building so that an expandable element in each of the sensors having an electrically conductive plate expands when wetted to operate a circuit which causes the water safety valve to close and shut off the main water line to the building. The valve, when activated, also operates a power interrupter which deactivates the connections to the device from the AC power source.

REFERENCES:
patent: 1179537 (1916-04-01), Mapel
patent: 2347544 (1944-04-01), De Costa et al.
patent: 2432367 (1947-12-01), Andresen
patent: 2717990 (1955-09-01), Person
patent: 3473553 (1969-10-01), Collins
patent: 3770002 (1973-11-01), Brown
patent: 4246575 (1981-01-01), Purtell et al.

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