Reverse Osmosis Pumps (Feed, Booster, CIP & Chemical Make-Up)
RO skids live on quiet pressure, clean materials, and dependable dosing. We size multistage centrifugal for high head to the membrane rack, inline/end-suction for distribution/CIP loops, mag-drive for corrosive chemical transfer, and digital/peristaltic metering for antiscalant, pH, and biocide. Brands: Grundfos, Goulds, Griswold, Finish Thompson, Iwaki, LMI, Neptune, Emec, Walchem, Flux, J.L. Wingert, Gorman-Rupp, BJM.
Best-Fit Pumps for RO Systems
| Service | Best Pump Type | Recommended Brands | Why It’s Best |
|---|---|---|---|
| RO feed / high-head booster | Multistage vertical centrifugal (VFD) | Grundfos CR | High head in a compact footprint; stable curve and excellent efficiency |
| Permeate distribution & recirculation | Vertical inline / End-suction centrifugal | Grundfos TPE; Goulds; Griswold | Quiet operation, easy service, ECM/VFD control options |
| Antiscalant / pH / biocide dosing | Digital diaphragm / Peristaltic metering | LMI PD/TD & KML/KBL; Neptune; Emec; Walchem (control) | High turndown accuracy; hose-only wetted path for off-gassing chemistries |
| CIP supply & return | End-suction / Inline centrifugal | Grundfos; Goulds; Griswold | Efficient recirculation at temperature; simple maintenance |
| Acid/caustic transfer (make-up) | Mag-drive sealless centrifugal (PP/PVDF/ETFE) | Finish Thompson DB/UC; Iwaki MX/MD | Leak-free containment and broad chemical compatibility |
| Carboy / drum / IBC loading | Drum/IBC pump + injection hardware | Flux; J.L. Wingert (columns, quills) | Ergonomic transfers with validated injection and calibration |
| Equipment rooms / sumps | Submersible / Self-priming | BJM; Gorman-Rupp | Reliable cleanup and floor drain handling |
Material note: We match alloys/elastomers to chloride limits and temperature, and bias low-TOC wetted materials where purity matters.
Recommended RO Packages (Placeholders)
Tip Share permeate/reject targets, SDI, duty points, loop volume/velocity, chemistry list, and controls I/O. We’ll return curves and a spec-ready BOM.
How We Engineer RO Duty
- Quiet pressure: multistage selections sized near BEP with VFD control.
- Dosing reliability: back-pressure, anti-siphon, calibration columns, injection quills.
- Containment: sealless mag-drive for aggressive chemicals and clean equipment rooms.
- Serviceability: isolation, drains/vents, standardized wear kits and hoses.
- Documentation: curves, materials list, and integration notes for panel I/O.
Common RO Uses
- RO feed and booster sets
- Permeate distribution loops
- CIP for membranes & tanks
- Antiscalant/pH/biocide dosing
- Filter feed/backwash
- Acid/caustic chemical make-up
- Drum/IBC loading and transfer
- Equipment room sumps
- UV/TOC polish recirculation
- Point-of-use pressure control
Quiet Pressure. Clean Materials. Reliable Uptime.
Send duty points, loop volume/velocity, chemistry, and controls I/O. We’ll quote a low-TOC, serviceable package with curves and submittals—fast.
Reverse Osmosis Pump FAQs
Multistage or inline for my RO?
Use multistage (e.g., Grundfos CR) for high head to the membranes; use inline/end-suction for distribution and CIP loops where stable pressure matters.
How do you keep dosing accurate at low flows?
We pair digital metering with back-pressure valves, anti-siphon checks, calibration columns, and injection quills—plus Walchem controls if needed.
Why specify mag-drive for chemical transfer?
Sealless designs remove a mechanical seal leak path, improving containment for CIP solutions, pH adjusters, and oxidants.