Suitable fluids Heating water to VDI2035 Water/glycol mixtures max.Mixing ratio1:1 Hydraulic corrections required for mixing ratio above20% Performance Single-speed Automatic switch Fluid temperature range -10C ~ +110C Max.Working pressure 10bar Ambient Temperature Permissible up to 40C Power Mains power 1~230v, 50Hz Motor Degree of protection IP54 Insulation class F Construction Materials Pump body cast iron Impeller GF-PP Shaft stainless steel Bearings graphite