Pahlen electric heaters 3,0-18,0 kW are formed from a very durable polymer and are designed for continuous flow with the lowest possible pressure loss. The compact design enables installation where there is little space. The outer jacket and the junction box are made of plastic and the heating element is made of nickel/iron/chrome alloy. The heater is supplied with union couplings for adhesive bonding of diam. 50 mm pipes. All heaters are equipped with thermostat 0-45°C, overheating limit control 60°C and flow switch.