The utility model relates to sectional aluminum heating radiators containing devices that protect the radiators from damage caused by excessive pressure. Each section of the aluminum heating radiator contains an internal vertical channel for the coolant with a technological hole in the end part, closed with a plug using an integral lock connection, sealed with a gasket in the form of a membrane containing a mounting part located around the perimeter, and a central part of a convex shape with the formation of a compensation tank between membrane and plug. At the same time, a rounded cap with an emphasis of its lower edge on the bottom of the plug is installed in the compensation tank under the membrane. The cap is made of sheet metal material 0.4-0.8 mm thick. In the center of the bottom of the plug, an inspection hole can be made. The technical result is the ability to compensate for high excess pressure and increase the period of trouble-free operation of the radiator.
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