1531 – 15 FRAME PLUNGER PUMP Home > Brands > CAT Pumps > Plunger Pumps > 1531 – 15 FRAME PLUNGER PUMP Posted on September 30, 2016October 17, 2016 by tugz Technical Specifications Max Flow: 15 Min Pressure: 100 Max Pressure: 1500 Inlet Port Size: 1″NPT Discharge Port Size: 3/4″NPT RPM: 1450 Drive Type(s): Belt Material: Stainless Steel (SS)