Samson 302 Pumpmaster 3 55:1 Grease Pump 120 lb KEG

The Samson 302 Pumpmaster 3 addresses the need for reliable, high-pressure grease dispensing in service shops, agricultural operations, and light industrial facilities. With a 55:1 pressure ratio generating up to 7,700 PSI at the fluid outlet, it is engineered to push NLGI-2 grade grease through distribution lines and dispensing hoses at a continuous duty rate of 0.7 lb/min. The air-operated design eliminates electrical components at the point of use, a practical consideration in environments where moisture, grease contamination, or flammable atmospheres are present.

The pump operates on an air pressure range of 20 to 140 PSI with consumption rated at 5.8 SCFM, requiring compressor capacity planning as part of procurement. It is designed for 120 lb grease kegs, and installation teams should verify bung fitting compatibility with their specific keg supplier. The lightweight construction supports use in mobile and portable greasing units. Maintenance considerations include seal inspection intervals — particularly when handling synthetic or non-standard grease formulations — and availability of Samson-specific replacement parts through authorized distributors.