RO Pumps, Watermaker Parts & High‑Pressure Components

This collection of RO systems and parts provides the high‑pressure pumps, diaphragm pumps, magnetic‑drive pumps, and rebuild components required to keep marine reverse osmosis watermakers running at peak performance. Featuring 25 products from industry leaders such as Cat Pumps, Shurflo, March Pumps, Primetime, and General Pump, this category supports everything from compact cruising watermakers to high‑output desalination systems.

The lineup includes Cat Pump plunger pumps such as the 231, 237, 241, 247, 271, and 277, delivering 2.3–3.6 GPM at 1500 PSI for demanding RO applications. For low‑pressure feed and circulation, options include Shurflo 2088‑554‑144, 8005‑952‑480, and 8008‑943‑839 diaphragm pumps, as well as March AC‑5C‑MD magnetic‑drive pumps in both 115V and 230V configurations.

Support components include Primetime 12V/24V/115VAC pumps, rebuild kits, General Pump oil, O‑rings, gaskets, valve kits, seal kits, and complete WM4215C/WM4215CL RO pumps for left‑ or right‑hand shaft installations.

Whether you’re servicing a compact watermaker or maintaining a high‑capacity RO system, these pumps and parts deliver the pressure, reliability, and corrosion resistance required for marine desalination.

Key Features of Our RO Systems & Parts

• High‑pressure Cat Pumps for 1500 PSI RO applications
• Diaphragm pumps from Shurflo for feed and circulation
• Magnetic‑drive pumps from March in 115V and 230V
• Primetime pumps in 12V, 24V, and 115VAC configurations
• Complete rebuild kits for Primetime and General Pump models
• Seal kits, valve kits, O‑rings, and gaskets for RO maintenance
• WM4215C and WM4215CL RO pumps for left/right shaft setups
• Suitable for compact and high‑output marine watermakers
• Corrosion‑resistant components for long‑term reliability
• Designed for continuous‑duty marine desalination systems<

FAQs

1. What type of pump is best for a marine RO watermaker?

High‑pressure RO systems typically use Cat Pump plunger pumps for 1500 PSI operation, while Shurflo and March pumps handle feed and circulation stages.

2. How often should RO pump seals and valves be replaced?

Most manufacturers recommend replacing seals, O‑rings, and valve kits annually or sooner if pressure drops, leaks, or reduced flow are observed.

3. Can I rebuild my existing RO pump instead of replacing it?

Yes — many pumps, including Primetime and General Pump models, offer rebuild kits that restore performance at a lower cost than full replacement.