**Product Details:** - Self-Priming Centrifugal Pump - Hydraulic Motor Driven - Made by Ace Pumps - 150 Series - 1 1/2" X 1 1/4" Suction and Discharge - 120 PSI Max Shutoff Pressure - On Open Center Systems, the Integral Needle Valve Bypasses up to 9 GPM - Includes Stainless Steel Shaft and Wear Ring