Automatic booster pump,circulating pump With long life, low noise, no leakage, enviroment protection, ... liquids, without abrasives, which are non-aggressive fro the pump materials.2.For heating plants.3.For circulating plants.Operating ... pressure ≤43dB(A) Pump modelPower(w)Max.flowl/minMax.headMInlet/outletInRS-90 9016 9 1"RS-12014523121" Automatic hot water booster pump,Hot water circulation pump