The NP&P 4″ pump series is carefully designed and manufactured for maximum resistant against sand and Other impurities providing a long life and trouble free operations. The Floating Impeller design ensures an excellent resistance to wear and tear against sand and other impurities. The Discharge Case and Motor Adapter are made of precision-cast stainless steel ensuring maximum resistance to corrosion. As well as strength and rigid coupling to the motor. The Check Valve is integrated in the discharge case to support the weight of the water column and to protect against water hammer, thus safeguarding impellers and diffusers. The pump can also be installed horizontally.