with flow meter (3 l/min), Dimension DN 25, consisting of return distributor with upper thermostatic inserts (M 28 x 1.5), supply distributor with flow meter inserts. Vent and drain with hose connection, distributor connection with female thread G 1", distributor outlets with G ¾" Euro-cone connection. Accessories compression adapters (1 6098 xx) and ball valves (1 2224 03/13, 1 2205 13/23) must be ordered separately.