IPT Portable High Volume, Self-priming Centrifugal Trash Pump come standard with a cast iron impeller to resist abrasion and one tool serviceability for easy cleanout. All Pumps feature aluminum housing, cast iron wear parts, built-in check valve, suction strainer and heavy duty steel roll frame. Heavy duty cast iron flanges with male NPT threads that rotates in 90 degree increments. Easy access fill plug on discharge port.