3.5 GPM Watermaker Cat Pump 1200 PSI 1725 RPM Direct Drive 316 Stainless Steel

CAT Pumps 3.5 GPM Watermaker Pump – 316 Stainless Steel Direct Drive Plunger Pump

This CAT Pumps triplex plunger pump is a highly efficient, industrial-duty, direct-drive pump purpose-suited for watermaker and reverse osmosis desalination systems. Rated for a steady flow rate of 3.5 GPM, it delivers the consistent high-pressure feed required to drive seawater and brackish water RO membranes efficiently, making it a proven choice for marine watermakers, seawater desalination, industrial misting, and specialized chemical injection systems.

Engineered for high-pressure fluid transfer in highly corrosive and demanding environments, this positive displacement pump features a wetted end constructed entirely of 316 Stainless Steel. This premium metallurgy ensures maximum structural integrity, exceptional chemical compatibility, and long-lasting durability, making it an industry standard for continuous-duty watermaker service where reliable, corrosion-resistant performance is essential.

Designed to deliver precise and reliable performance, this pump operates at a maximum pressure capacity of 1,200 PSI. 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 — helping keep a watermaker system running dependably between service intervals. Utilizing a space-saving, hollow-shafted configuration, this pump is designed to bolt directly to a standard 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 required for mission-critical watermaker and liquid handling systems.

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