System for freeze protection of pipes

Details System for freeze protection of pipes System for freeze protection of pipes

1985-10-11

1987-06-16

Walton, George L.

Fluid handling

Freeze condition responsive safety systems

126420, 137337, 137564, 137565, 138 32, 237 80, 417 32, E03B 712, F16L 5300

Patent

active

046729909

ABSTRACT:
A system for freeze protection of pipes is provided, comprising a cold water supply line, connected to a main water supply line at one end and to at least one cold water fixture at the other end; a hot water tank having an inlet and an outlet; a hot water tank inlet line, connected at one end to the cold water supply line, and at the other end to the hot water tank inlet; a hot water supply line, connected to the hot water tank outlet at one end and to at least one hot water fixture at the other end; at least one restrictive connection, connecting between the cold water supply line and the hot water supply line; and a circulating pump, connected in-line in a circuit comprising the cold water supply line, the hot water tank inlet line, the hot water tank, the hot water supply line and the restrictive connection.

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patent: 4471907 (1984-09-01), Gerstmann
patent: 4481966 (1984-11-01), Anderson

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