277ALT – 3 FRAME PLUNGER PUMP Home > Brands > CAT Pumps > Plunger Pumps > 277ALT – 3 FRAME PLUNGER PUMP Posted on September 30, 2016April 14, 2021 by tugz Technical Specifications Max Flow: 4.25 Min Pressure: 100 Max Pressure: 1000 Inlet Port Size: 1/2″NPT(F) Discharge Port Size: 3/8″NPT(F) RPM: 1725 Drive Type(s): Belt Material: Nickel Aluminum Bronze (NAB)