F - Mech Eng,Light,Heat,Weapons – 24 – D
Patent
F - Mech Eng,Light,Heat,Weapons
24
D
137/109, 237/21
F24D 3/00 (2006.01) F24D 19/10 (2006.01)
Patent
CA 1116975
ABSTRACT A control unit for a central heating system of the type in which a heated fluid is circulated in a main distributing section and a group distributing section. The unit consists of a first body in the main distri- buting section pipe and a second unit in the group distributing section. The first body has a shunt valve for controlling flow between the two bodies, and thus the two sections. The second body may be provided with a pump for circulating fluid in the group distributing section. The two bodies are con- nected via two thermally insulating non-return valves. The thermal con- ductivity of the valves is less than 1.00 kcal/m h °C.
347896
Johansson Lars S.
Nordqvist Bert S.
Fetherstonhaugh & Co.
Vadstena Pumpar Ab
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