Engineered for high-volume lubricant transfer, the Graco 242057 Fire-Ball 425 is a 50:1 ratio grease pump designed to deliver superior performance in demanding vehicle service environments. Built for 400 lb (180 kg) drums, this heavy-duty pneumatic pump features a large 4.25-inch air motor, providing the necessary power for long-distance piping runs and simultaneous dispense points. The non-corrosive air motor design utilizes a displacement pump with minimal moving parts, ensuring maximum uptime and reduced maintenance costs. With a maximum fluid pressure of 7500 psi (517 bar) and a maximum air input pressure of 150 psi (10 bar), it offers consistent flow even with heavy, tacky greases. The robust construction includes a 1/2 inch NPT(f) air inlet and 3/8 inch NPT(f) fluid outlet. Ideal for fleet maintenance shops and industrial lubrication systems, the Fire-Ball 425 provides unmatched reliability, durability, and high-pressure delivery for large-scale operations requiring professional-grade grease distribution and efficient fluid management solutions.