Method of preventing freezing in pipes, and a piping system...

Details Method of preventing freezing in pipes, and a piping system... Method of preventing freezing in pipes, and a piping system...

E - Fixed Constructions

03

B

137/147

E03B 7/12 (2006.01) F16L 55/00 (2006.01)

Patent

CA 1303460

ABSTRACT According to a method of preventing freezing in water piping there is arranged a non-return valve (3) upstream of the portion (1A) of the piping (1) which is to be pro- tected, and a safety valve (4) downstream of this portion. The safety valve opens to allow the water to flow out and prevent freezing at a pressure increase of the water entrapped downstream of the non-return valve, the pressure increase occurring when the temperature falls form +4°C towards the freezing point. The invention also relates to a piping system for carrying out the method.

561540

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