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A woman in a warm sweater turns the regulator of the thermostatic radiator valve to the middle position to set the economical heating mode of the room. Heating of the apartment in the cold season.
Black halftone dots in vortex form. Geometric art. Trendy design element.Circular and radial lines volute, helix.Segmented circle with rotation.Radiating arc lines.Cochlear
The vent or bleed valve at the end of a radiator to vent air from the heating system. Close-up, selective focus.
Worker (dosimetrist) holding personal dosimeter (for measuring level of radiation)
A family in bright warm winter socks warms their feet on the heating radiator in the house. Electric or gas heater at home. The symbolic image of the heating season at home.

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