CAT Pumps 331 with 4 frame piston pump

• Make: CAT Pumps
• Model code: 331

Features: Triplex uniflow design Lubricated wetted cups and floating pistons Mechanically actuated inlet valves 304 stainless steel discharge valves Oil bath crankcase 100% wetted seal design Cylinder and sleeve wear surfaces Chrome plated, brass manifolds and optional stainless steel manifolds Special high strength TNM connecting rods Chrome-moly crankshaft Oversized crankshaft bearings  Specifications: Flow: 4.0 GPM Pressure range: 100 to 1200 PSI RPM: 1070 RPM Bore: 0.709" Stroke: 0.768" Crankcase capacity: 21 oz. Maximum liquid temperature: 160° Inlet pressure range: – 8.5 to +40 PSI Inlet ports (1): 1/2" NPTF Auxiliary port (1): 1/4" NPTF Discharge ports (2): 3/8" NPTF Discharge ports (1): 1/2" NPTF Pulley mounting: Either side Shaft diameter: 0.650" Weight: 17.7 lbs. Dimensions: 12.56 x 8.8 x 5.33"