System for preventing loss of water from the water line of a bui

Details System for preventing loss of water from the water line of a bui System for preventing loss of water from the water line of a bui

1991-02-11

1992-01-21

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Static constructional installations

137434, 137883, F16L 500

Patent

active

050820184

ABSTRACT:
A one-way check valve is positioned in a water line leading from a building to a water supply line or main so that the water line is divided into a first portion substantially disposed within the building and a second portion substantially disposed externally of the building. The valve retains water in the first water line portion in the event of a loss of water pressure in the second water line portion as may be caused, for example, by earthquake or other earth movement.

REFERENCES:
patent: 1526718 (1925-02-01), Opp
patent: 2931382 (1960-04-01), Cirillo
patent: 3028966 (1962-04-01), Wiesmann
patent: 4848389 (1989-07-01), Pirkle

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