MISOL 110v Brass circulation pump 3 speed,for solar water heater or hot water heating circulation pump for hot water heating system, 110V, 3 speed. thread Size: G1 BSP (there are 2 connectors (G1'BSP to 3/4'NPT) in the package) speed: 3 gears *I. P1:55W/I: 0.50A *II. P1:70W/I: 0.70A, *III. P1:100W/I: 0.90A Enclosure: IP44,Max. Flow: 4 m3/h Pressure: Max. 10 bar,Max. Head: 6m