Pipe temperature control valve

Details Pipe temperature control valve Pipe temperature control valve

2006-09-12

2006-09-12

Norman, Marc (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

C236S012100

Reexamination Certificate

active

07104461

ABSTRACT:
A control valve for preventing freezing in a pipe. A ball valve selectively biased against a valve seat is controlled by a bimetallic snap disk. The control valve is connected to one or more water pipes. When the temperature in the pipe or in the control valve is below a certain temperature, the valve opens to allow a small quantity of water to flow through the valve to allow warmer ground water to warm liquid in the pipes. When the water is warmed to a set temperature the valve closes again allowing normal operation of the supply pipes.

REFERENCES:
patent: 503932 (1893-08-01), Keeney
patent: 3446226 (1969-05-01), Canterbury
patent: RE29155 (1977-03-01), Mears
patent: 4044754 (1977-08-01), Cronin
patent: 4311272 (1982-01-01), Foller
patent: 4460006 (1984-07-01), Kolze
patent: 4471906 (1984-09-01), Noguchi et al.
patent: 4638828 (1987-01-01), Barrineau
patent: 4667694 (1987-05-01), Dalton
patent: 4809727 (1989-03-01), Chamberlin
patent: 4821954 (1989-04-01), Bowder
patent: 4848389 (1989-07-01), Pirkle
patent: 5421362 (1995-06-01), Sordello
patent: 6021798 (2000-02-01), Martin
patent: 6102127 (2000-08-01), Pierce
patent: 6860432 (2005-03-01), Conover et al.
Therm-Omega-Tech Freeze Protection Valve and Heat Protection valve printed from http://thermomegatech.com on Jan. 5, 2005 (6 pages).
Installation and Maintenance Instructions allegedly printed Jul. 1995. (2 pages).

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