2.85 GPM Quite Watermaker Cat Pump 10.8 LPM 1200 PSI 316 Stainless Steel 1725 RPM Direct Drive 3/8" NPT(F) Inlet / Discharge Port Size

CAT Pumps 2.85 GPM Watermaker Pump – 316 Stainless Steel Direct Drive, Quiet-Operation Plunger Pump

This CAT Pumps triplex plunger pump is a specialized, industrial-duty, direct-drive pump purpose-suited for watermaker and reverse osmosis desalination systems, engineered to deliver highly reliable fluid transfer while significantly reducing operational noise. Rated for a steady flow rate of 2.85 GPM, it delivers the consistent high-pressure feed required to drive seawater and brackish water RO membranes efficiently, making it a strong fit for marine watermakers, large industrial reverse osmosis, seawater desalination, and specialized chemical injection systems where both durability and lower decibel levels are prioritized.

This positive displacement pump features a wetted end constructed entirely of 316 Stainless Steel. This premium manifold metallurgy ensures exceptional structural integrity and high chemical compatibility, making it an industry standard for continuous-duty watermaker service where reliable, corrosion-resistant performance is essential.

Designed to maximize uptime and operational efficiency, this pump utilizes a precision-engineered 5/8" hollow shaft configuration that allows it to bolt directly to a standard NEMA 56C-face electric motor, eliminating the need for external belts, pulleys, and mounting plates. It operates at a maximum pressure capacity of 1,200 PSI, and is factory-equipped with standard NBR (Buna-N) seals and O-rings that safely accommodate liquid temperatures up to 160°F. By combining a true low-friction wear surface via solid ceramic plungers with a compact, noise-reducing footprint, this plunger pump delivers consistent, reliable performance for high-purity watermaker fluid systems.

Specification Table