66DX40G1I – 66DX DIRECT DRIVE PLUNGER PUMPS Home > Brands > CAT Pumps > Plunger Pumps > 66DX40G1I – 66DX DIRECT DRIVE PLUNGER PUMPS Posted on September 29, 2016October 17, 2016 by tugz Technical Specifications Max Flow: 4 Min Pressure: 100 Max Pressure: 4000 Inlet Port Size: 1/2″NPT(F) Discharge Port Size: 3/8″NPT(F) RPM: 3400 Drive Type(s): Direct Material: Brass (BB)