Collection: Watermaker Pumps

316 Stainless Steel Direct-Drive Watermaker Pumps (0.5 – 4.2 GPM)

Engineered specifically for the rigorous demands of marine desalination, this premier collection of high-pressure triplex plunger pumps provides the mission-critical reliability required for onboard Seawater Reverse Osmosis (SWRO) systems. Featuring industry-leading models from the renowned Cat Pumps 2SF and 2SFQ ("Quiet") Series, each pump in this category is constructed with a specialized wetted end machined entirely from premium 316 Stainless Steel. This high-grade metallurgy offers exceptional corrosion resistance and structural integrity, ensuring long-lasting, continuous-duty performance when pumping highly corrosive, high-salinity seawater. Ideal for sailboats, luxury yachts, and long-range cruisers, these positive displacement pumps represent the gold standard in marine watermaker technology.

Designed for seamless integration into tight engine rooms and space-limited maritime environments, these pumps utilize a compact, direct-drive configuration. Featuring a standard 5/8-inch hollow shaft, they bolt directly to compatible NEMA 56C-face electric motors, completely eliminating the need for bulky external belts, pulleys, and mounting plates. Operating at a standard 1725 RPM, the collection spans a versatile range of precise flow rates—from highly efficient 0.5 GPM models for small sailing vessels to robust 4.2 GPM units for high-capacity purification systems—while safely handling standard SWRO test pressures up to 1200 PSI. With advanced concentric solid ceramic plungers minimizing internal friction and extending standard seal life, this collection guarantees unwavering hydraulic performance for critical offshore water production.