FIELD: heating and hot water supply systems. SUBSTANCE: radiators are connected with supply and return pipe lines by means of feeders. Cold water line is connected to mixing plumbing devices. Connectors are provided between radiators, supply and return pipe lines. Coupling of connectors and mounting of shut-off cocks in pipe lines and connectors make it possible to supply cold water from water line to plumbing devices when the boiler is disconnected. Drain pipe line is provided with steam safety valve. EFFECT: enhanced reliability. 2 cl, 4 dwg
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