Automatic water line freeze control

Details Automatic water line freeze control Automatic water line freeze control

1985-09-13

1987-01-13

Walton, George L.

Fluid handling

Freeze condition responsive safety systems

Low temperature responsive drains

137392, 137551, 137554, 13762415, 13762418, 340593, 340595, 374148, 374170, 374183, E03B 710, F16L 5500

Patent

active

046356681

ABSTRACT:
An automatic freeze control (10) includes a temperature sensor (18) and a valve (20) connected to the water line (22). Control circuitry (36, 38, 40, 42, 44 and 46) is responsive to the line water temperature continuously monitored by the sensor (18) to selectively open the valve (20) for increased periodic flow with decreasing temperature.

REFERENCES:
patent: 1028808 (1912-06-01), Campbell
patent: 1226696 (1917-05-01), Ramseur
patent: 1786878 (1930-12-01), Van Keuren
patent: 2565323 (1951-08-01), Quinn
patent: 3817105 (1974-06-01), Luhowy
patent: 3872726 (1975-03-01), Kauffeld et al.
patent: 3922640 (1975-11-01), Ruof
patent: 4086812 (1978-05-01), Luthe et al.

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