Wheatley Model P100 – Duplex Plunger Pump New model number 11D2LSplash-Gravity Feed Power End Lubrication DiagramSpecs No. of Pistons: 2 Stroke Length: 51/8″ Piston Load: 2500 LBF Gear Ratio: 4.933:1 Crank Pin: 2.75 Diameter 2.00″ Wide Pinion Shaft: 1.500 Diameter 3/8″ X 3/16 KWY Oil Capacity: 5 U.S. Quarts Pump Weights by Model: 535 = 800 LBM 545 = 925 LBM Standard Connections For Fluid End Bodies: 535: Cast 2 1/2 11 FNPT Suction ” FNPT Discharge 545: Cast 3 FNPT Suction 2″ FNPT Discharge Standard Materials For Fluid End Bodies: 535: CAST Gray Iron CAST Ductile Iron 545: CAST Gray Iron CAST Ductile Iron Wheatley and GASO models have changed recently so we have provided a quick reference table for your convenience – click here