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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)
Regular price $1,599.99 USDRegular priceSale price $1,599.99 USD -
2.5 GPM Watermaker Cat Pump 9.5 LPM 1200 PSI 316 Stainless Steel 3/8" NPT(F) 1725 RPM Direct Drive
Regular price $1,499.99 USDRegular priceSale price $1,499.99 USD -
4040 Desalination Machine Membranes 1,950 GPD at 800 PSI 4 x 40 inch 99.7% Rejection
Regular price $299.99 USDRegular priceSale price $299.99 USD -
3.5 GPM Watermaker Cat Pump 1200 PSI 1725 RPM Direct Drive 316 Stainless Steel
Regular price $1,299.99 USDRegular priceSale price $1,299.99 USD -
Seawater 1,950 GPD at 800 PSI 4 x 40 inch 99.7% Rejection LG Membranes
Regular price $299.99 USDRegular priceSale price $299.99 USD -
2.85 GPM Watermaker Cat Pump 1200 PSI 316 Stainless Steel Direct Drive
Regular price $1,299.99 USDRegular priceSale price $1,299.99 USD -
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
Regular price $1,299.99 USDRegular priceSale price $1,299.99 USD -
1.5 GPM Watermaker Cat Pump 5.7 LPM 1200 PSI 3/8" NPT(F) 1725 RPM Direct Drive 316 Stainless Steel
Regular price $1,399.99 USDRegular priceSale price $1,399.99 USD -
1 GPM Watermaker Cat Pump 3.8 LPM 1200 PSI 1725 RPM Direct Drive 316 Stainless Steel
Regular price $1,399.99 USDRegular priceSale price $1,399.99 USD -
3.5 GPM Quiet Watermaker Cat Pump 13.2 LPM 1200 PSI 1725 RPM Direct Drive 316 Stainless Steel
Regular price $1,299.99 USDRegular priceSale price $1,299.99 USD -
Replaces SW30-4040 Seawater 1,950 GPD at 800 PSI 4 x 40 inch 99.7% Rejection LG Membranes
Regular price $299.99 USDRegular priceSale price $299.99 USD -
2540 1000 PSI FRP Fiberglass Housing for 2.5 x 40 inch Membranes
Regular price $735.08 USDRegular priceSale price $735.08 USD -
TM810C Toray 1,200 GPD at 800 PSI 4 x 40 inch Membranes
Regular price $361.35 USDRegular priceSale price $361.35 USD -
4.2 GPM Watermaker Cat Pump 15.9 LPM 1000 PSI 316 SS Direct Drive
Regular price $1,599.99 USDRegular priceSale price $1,599.99 USD -
4.2 GPM Watermaker Cat Pump 15.9 LPM 1200 PSI 316 Stainless Steel 1725 RPM Direct Drive 3/8" NPT(F) Inlet & Discharge Port Size
Regular price $1,499.99 USDRegular priceSale price $1,499.99 USD -
300 GPD Watermaker Membrane 2.5 x 21 inch
Regular price $237.94 USDRegular priceSale price $237.94 USD
Collection: Watermaker Components & Kits
This premium collection provides everything needed to build, repair, or upgrade commercial and marine watermaker systems. We offer a complete selection of high-pressure seawater desalination components, including advanced reverse osmosis (RO) membranes, durable fiberglass pressure vessels, and specialized stainless steel high-pressure pumps. These professional-grade parts are engineered to convert high-salinity seawater into safe, potable drinking water for offshore marine environments, sailing yachts, and coastal facilities.
At the core of these systems are our seawater RO membranes, available in standard marine sizes ranging from compact 2.5" x 14" elements to high-capacity 8.0" x 40" modules. We stock industry-leading brands such as DuPont FilmTec, Hydranautics, LG Water Solutions, and Toray, alongside our highly efficient HCTI direct replacements. To safely house these critical elements, we supply heavy-duty FRP fiberglass pressure vessels rated for 1,000 PSI to easily withstand the extreme operating pressures required for continuous marine desalination.
For operators looking to power their systems, this collection features dedicated 316 stainless steel Cat Pumps designed to resist severe saltwater corrosion while delivering reliable, continuous pressure up to 1,200 PSI. We also provide complete watermaker kits that package the membrane, housing, high-pressure pump, motor, and necessary control valves into one convenient setup. Whether you are outfitting a small recreational boat or a large commercial vessel, these components guarantee dependable, self-sustaining freshwater production.
| Specification | Details |
| Product Category | Watermaker Components, Pumps, Housings & Kits |
| Membrane Technology | Seawater Reverse Osmosis (Polyamide TFC) |
| Available Element Sizes | 2.5" x 14", 2.5" x 21", 2.5" x 40", 4.0" x 21", 4.0" x 40", 8.0" x 40" |
| Standard Operating Pressure | 800 PSI (Membranes) |
| Component Max Pressure Ratings | 1,000 PSI (FRP Housings) / 1,200 PSI (Cat Pumps) |
| Pump Construction | 316 Stainless Steel (Corrosion Resistant) |
| Featured Brands | DuPont FilmTec, Hydranautics, Toray, LG Water Solutions, Cat Pumps, HCTI |
| Primary Applications | Marine Desalination, Boat Watermakers, Offshore Platforms |