Hot water circulating pump, circulation pump (CE certificate) Pump body: cast iron Impeller: PP Shaft: ceramic Hot water circulating pump, circulation pump (CE certificate)Now, our company supply two kinds of circulation pumps: RS25/4G, RS25/6G at a low priceConstruction materialPump body: cast ironImpeller: PPShaft: ceramicBearings: ceramicPower1~230V, 50HzAmbient TemperaturePermissible up to 40 ...