Product Features EP04 Impeller: Thermoplastic semi-open design with pump out vanes for mechanical seal protection. EP05 Impeller: Thermoplastic enclosed design for improved performance. Casing and Base: Rugged thermoplastic design provides superior strength and corrosion resistance. Motor Housing: Cast iron for efficient heat transfer, strength, and durability. Motor Cover: Thermoplastic cover with integral handle and float switch attachment points. Power Cable: Severe duty rated oil and water resistant. Bearings: Upper and lower heavy duty ball bearing construction. Capable of running dry without damage to components. EP04 & EP05 Series – Model 3871 Specifically designed for the following uses: Effluent Systems Homes/Farms Heavy Duty Sump Water Transfer Dewatering