FIELD: heating.
SUBSTANCE: invention relates to the devices preventing freezing of building heating system. Device preventing freezing of building water-heating system is installed at the inlet pipeline and consists of cutoff valve and control unit. The device is located at the upper point of heating system. Control unit is made of material with a shape memory effect, transient point of which is between room temperature and 0°C. There is additional vertical pipeline with open end, connected to the inlet pipeline.
EFFECT: simplification of design of device preventing freezing of building water-heating system.
2 cl, 3 dwg
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