Series PR AB all bronze pumps are dependable, in-line booster pumps intended to pump potable, domestic water from hot water heater tanks to areas such as bathrooms and kitchens. The Series PR is designed for applications that require increased flow and head pressures. The Series PR features a three-piece design, which includes a motor, bearing assembly and volute. This innovative design provides for easy field service as the bearings, shaft and seal are all housed within the bearing assembly. That assembly can then be easily repaired or entirely replaced without disturbing the other components of your pump. The Series PR's resilient motor mounting is another feature unique to Bell & Gossett. The mounting, combined with spring-loaded couplers, means your pump will run quietly and efficiently. The Series PR AB features a bronze impeller. A tube of Bell & Gossett oil along with flange gaskets and mounting hardware are included with the pump. Flanges are available separately in 3/4", 1", 1-1/4", and 1-1/2".