Mixers, Deaerators, Preparation 3- way and 4-way Mixers 2- and 3-way control valves Loading valves, Solid fuel loading sets Thermal mixer, Hot water mixture Motorised changeover valves and ball valves Balancing valves, flow meter Circulation regulator valves Overflow valves Air vent Air/dirt separator Heating water treatment Mixers, Deaerators, Preparation