Graco PowerFlo Bulldog Series Pneumatic Air-Powered Pump. Model: 206596. S/N: 71. Pump size: 55 gal. (200 liter). Maximum fluid flow(100 cpm): 13.3 gpm. Maximum fluid working pressure: 1000 psi. Maximum pump air input pressure: 100 psi. Fluid to air pressure ratio 10:1. Wetted parts materials of construction include: stainless steel, Teflon, UHMWPE, Acetal and Delrin. Piston diameter: 2-1/2 in. Air Motor, Model: 7E1, P/N: 204640, maximum supply air pressure: 120 psi. Air Inlet: (1) 1 in. dia FNPT. Outlet: (1) 1-1/2 in. dia. FNPT. Overall dimensions: 1 ft. dia. x 3 ft. 11 in. H. (ACN51)