ARO Force Piston Pumps 55 Gallon WPX Package - 3.9 GPM (14.8 LPM). When it's time to clean up, our wash pump is a great high-power cleaning solution. Includes pump, wall mount bracket, suction tube assembly, and spray wand. Designed for heavy-duty cleaning of equipment and washing donw parts with detergents, caustics, and dilute acid type cleaners. 9:1 ratio, double-acting pump section is separated from the wir motor to prevent any cleaning solution from coming in contact with and damaging the air motor. Mounting Versatility - Wall mounted or directly mounted in 2" bung of a standard 55 gallon drum. Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation. Environmentally Sound - Optional muffler ensures pump meets OSHA specifications. Package Description: Cart Mounted Airless Spray Package, Basic Pump Model: AF0430G11XXXX, Heavy-Duty Cart: 67138, Muffler: 67445-1, Suction Hose: 622606-5