2.5 GPM Quiet Watermaker Cat Pump 9.5 LPM 1200 PSI 1725 RPM 316 Stainless Steel Triplex Positive Displacement Plunger Direct Drive 3/8" NPT(F)

CAT Pumps 2.5 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 2.5 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 corrosion resistance and lower decibel levels are critical priorities.

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, completely 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 continuous liquid temperatures up to 160°F. By combining a true low-friction wear surface via concentric solid ceramic plungers with a compact, noise-reducing footprint, this plunger pump delivers consistent, reliable performance for high-purity watermaker fluid systems.

Specification Table