General Pump EP SERIES – 24 MM SOLID SHAFT - Triplex Plunger Pump, Solid Shaft, 1750 RPM - New Forged brass manifold , increases working pressure to 4,000 PSI - New plunger guide bushing (patent pending). Solid ceramic plungers with dual guide system - New dual diameter plunger guide - New optimized outlet valves - New dual lip oil seal - Inlet Port Thread 1/2”-14 BSP-F - Discharge Port Thread 3/8”-19 BSP-F