1、The pump head of the circulating pump is made of cast iron, which is resistant to high temperature, shock and drop. 2、Using copper core wire motor and stainless steel impeller, dual protection is full of power and low operating noise. 3、Intelligent water flow sensor system, with sensitive operation, high efficiency and energy saving, more convenient to use. 4、With 3 levels of adjustment switch to control the power of the water pump, with a wide range of applications. 5、Suitable for all kinds of water pressurization, household heating circulation, floor heating circulation, equipment circulation, boiler circulation, etc. Item Type: Circulation Pump Material: Copper motor + cast iron pump head + stainless steel impeller Model: HRS15-6 Purpose: Domestic water, industrial water equipment, floor heating, boiler, heating circulation No Load Power: First level 15W, second level 30W, third level 50W Load Power: First level 46W, second level 67W, third level 100W Maximum Lift: Approx. 6meter / 19.7ft Maximum Flow: 65L/min Protection Level: IP42 Insulation Class: F Medium Temperature: 110℃ Inlet Outlet Diameter: Approx. 18mm / 0.7in 1 x Circulation Pump 2 x Connector 2 x Connector Washer 2 x Connector Knob Nut 1 x Waterproof Sealing Tape 1 x User Manual