4DX27ER – 4DX DIRECT DRIVE PLUNGER PUMP Home > Brands > CAT Pumps > Plunger Pumps > 4DX27ER – 4DX DIRECT DRIVE PLUNGER PUMP Posted on September 29, 2016April 15, 2021 by tugz Technical Specifications Max Flow: 2.7 Min Pressure: 100 Max Pressure: 2000 Inlet Port Size: 3/8″NPT(F) Discharge Port Size: 3/8″NPT(F0 RPM: 3450 Drive Type(s): Direct Material: Brass (BB)