2.2 GPM Watermaker Cat Pump 8.3 LPM 1200 PSI Triplex Positive Displacement Plunger 316 Stainless Steel Direct Drive 3/8" NPT(F) Inlet / Discharge Port Size 1725 RPM

CAT Pumps 2.2 GPM Watermaker Pump – 316 Stainless Steel

This CAT Pumps 2SF-Series pump is a highly efficient, industrial-duty direct-drive triplex plunger pump purpose-built for marine watermaker and reverse osmosis desalination systems. It's a trusted choice among sailors, yacht owners, and cruisers who need a dependable source of fresh water offshore, converting seawater into potable water aboard vessels ranging from long-range cruising sailboats to larger yachts.

Engineered for high-pressure fluid transfer in highly corrosive and demanding marine environments, this positive displacement pump features a wetted end constructed entirely of 316 Stainless Steel. This premium metallurgy ensures maximum structural integrity, exceptional resistance to saltwater corrosion, and long-lasting durability, making it an industry standard for continuous-duty applications such as seawater desalination, reverse osmosis watermakers, industrial misting, and specialized chemical injection systems.

Designed to deliver precise and reliable performance, the pump operates at a steady flow rate of 2.2 GPM with a maximum pressure capacity of 1,200 PSI — well matched to the membrane pressures required for efficient onboard watermaker operation. It incorporates advanced, concentric solid ceramic plungers that provide a true, low-friction wear surface, substantially extending the operational life of the standard NBR (Buna-N) seals. Utilizing a space-saving, hollow-shafted configuration, this pump is designed to bolt directly to a standard NEMA 56C-face electric motor. By eliminating the need for external belts, pulleys, and mounting plates, this compact direct-drive assembly delivers the highly consistent, continuous-duty operation that sailors and cruisers rely on for making fresh water at sea.

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