Pacer's S' Series Self-Priming Centrifugal pumps are lightweight and chemically resistant for general service on water, salt water, waste water, agricultural chemicals, and mild acids and bases. They feature stainless steel internal and external fasteners and EPDM elastomers The pumps are molded of tough, engineered thermoplastics. All pumps include a built-in check valve, feature easy servicing and during pumping, a self-cleaning double volute keeps pump free of settled solids. It features a 1.5" port on the inlet and discharge connections with NPT threads for easy connections. It is powered by a 0.5 hp, single-phase electric motor with flow rates of up to 65 GPM or 28 ft. TDH at 60 Hz for powerful pumping. Please Call Pacer with any chemical compatibility or application questions.