**Product Details:** - Low Pressure Diaphragm Pump - Made by UDOR - Part # ZETA 85P VAGR5 - 3-Cylinder - Gear Reduction for 5″ Shaft Gas Engine - 1 1/2" Hose Barb Inlet Port - (2) 1/2″ Hose Barb Outlet Ports - Valve - 3/4" Bypass Hose Barb - Comes Standard With GREENTECH Diaphragm - Includes Control Valve With Pressure Gauge - 22.0 GPM - 300 PSI - 550 RPM - Poly Pump Head - Manifolds are Externally Mounted - Liquid Handling Parts and Hardware Made From Stainless Steel