Automatic leak detection and shut-off system

Details Automatic leak detection and shut-off system Automatic leak detection and shut-off system

1995-12-11

1996-10-29

Lee, Kevin

Fluid handling

Systems

Programmer or timer

137486, 137552, 1376142, F17D 301, E03B 704

Patent

active

055688250

ABSTRACT:
A system for detecting leakage and unwanted flow in a fluid supply within a building capable of detecting small leaks and shutting off flow when such occur. The system may be operated in a continuous mode or on a timed mode, and the system allows flow for a preset small time period before the shut-off is initiated. The system includes an inflow sensor, a discharge sensor and valve means to seal the supply conduit in the event of unwanted fluid flow or backflow in the discharge conduit. The system is extremely sensitive due to the provision of a by-pass conduit around a check-valve in the supply conduit, where the flow sensor is positioned in the by-pass conduit, such that small volume water flow must pass through the flow sensor.

REFERENCES:
patent: 4180088 (1979-12-01), Mallett
patent: 4589435 (1986-05-01), Aldrich
patent: 4735231 (1988-04-01), Jacquet
patent: 5004014 (1991-04-01), Bender
patent: 5056554 (1991-10-01), White
patent: 5251653 (1993-10-01), Tucker et al.
patent: 5409037 (1995-04-01), Wheeler et al.
patent: 5441070 (1995-08-01), Thompson

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