Two-pipe block, can be switched to single-pipe operation, distance 50 mm, soft seal to radiator, for draining, filling and with presetting. The connection fittings for G 3/4" AG fit on the integrated valve sets of the radiator manufacturers: Baufa, Brötje, Brugmann, Buderus, De'Longhi, Kermi, Radel, Ribe, Vogel + Noot.