1.Solar water heater system circulation pump 2.High quality 3.Competitive price 4.Fast delivery 5.OEM solar water pump1.circulatiors for heating and secondary hot water circulation2.intelligent solutions for private water supplySpecificationsHead:3m, 5m, 6mOutput power:16w, 22w, 37w,Size of pipe: 15mm (out 25mm)Wight:2.1kg Solar Water Heater System Circulation Pump