Features: for DC 12V Hot/Cooling Water Circulation pump Super long working life,If you use it 24 hours a day, it can last for 4 years low consumption & low noise, Amphibious design,Easy installation, waterproof Submersible use(only for Cold water) Max operating temperature up to 100C with External circulating water flow The pump is good for the family home thermal solar systems or any circulation pump application where conventional power is not available Can'for t be immersed in 100C/212F hot water Inlet/Outlet: 1/2" male thead. Fit both 1/2" NPT and BSP female thead Suitable for circulation, no suitable for pressure boost Waterproof and Submersible Brushless motor, Silience, Long lifespan Ceramic pump core Specifications: for DC 12V submersible water pump Voltage:12V Power: 8.4W Max Flow Rate: 8L/Min(2.1GPM) Max Water Head: 3 for m(9.84feet) Low noise: 30db at 1 metre Max circulating water temperature: 100C/212F Overall Length; 92mm/3.62" Outlet Diameter: 20.4mm/0.80" for Head Diameter: 37mm/1.46" Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1x 12V Pump 2x brass coupler 2x stainless steel clamp 2x Rubber gaskets