Series PR AB three-piece all bronze booster pumps are used for domestic, potable water. HD3 pumps are oil-lubricated with a 1/6 HP, 1725 RPM, 115v, single phase motor. Series PR pumps are reliable, in-line booster pumps designed for applications that require increased flow and head pressures. It features a three-piece design, which includes a motor, bearing assembly and volute, and resilient motor mounting. The mounting, combined with spring-loaded couplers, means the pump will run quietly and efficiently. A tube of oil, flange gaskets, and mounting hardware are included. Flanges are available separately.