Collector for underfloor heating with flow meters (from 2 to 12 circuits), functionally and hydraulically tested, mounted on soundproof brackets, with the possibility of versatile connection (female thread 1“), external thread 3/4” outlets with eurocone, distance between outlets 50 mm. Minimum depth for concealed installation. Flowmeters 0-4 l/min on the supply pipe, fine hydraulic control valves on each circuit ("supply") for hydraulic equalization of all Collector circuits. Optimum hydraulic form of thermostatic valves on the return pipe, with the possibility of replacing the manual control cap with a servomotor (thread М 30 х 1,5). The kit includes a swivel ending with an air valve (drain cock).