Series PL-75B bronze body small circulator pumps are used for domestic, potable water. PL-75B pumps are permanently-lubricated with a 1/6 HP, 3400 RPM, 115v, single phase motor. Series PL pumps are reliable, in-line close-coupled booster pumps for hydronic, radiant, and geothermal heating and cooling systems. It's maintenance-free system, with a self-cleaning particle shield, and XL11 precision-crafted bearing system protect the shaft and bearings from system start-up debris. Unlike a wet rotor, Series PL pumps do not need to bypass system water via the motor to lubricate and cool the bearings. Mounting hardware and flange gaskets are included. Connections (union or flange) are available separately.