Specifications:Inlet/Outlet: 1/2" male thead. Fit both 1/2" NPT and BSP female theadMax Flow Rate: 6.5 L/MinMax Water Head: 3 metre(9.8ft)Max system pressure: 10BarMax circulating water temperature: 100C/212F. Can't be immersed in 100C/212F hot waterLow noise: 30db at 1 metreDimension:93 x 45 x 63 mmWeight:258 gPackage weight:288g Features:DC 12V Hot/Cooling Water Circulation pumpIf you use it 24 hours a day, it can last for 4 yearsEasy installationMax operating temperature up to 100C with External circulating water flowSuper long working lifelow consumption & low noiseAmphibious designSubmersible installation and entirely waterproofThe pump is perfect for the family home thermal solar systems or any circulation pump application where conventional power is not available