FEDCO MSD-400 Multi Stage Duplex Pump
Manufactured by Fluid Equipment Development Company (FEDCO), Monroe, Michigan, USA — supplied by ForeverPure Corporation, an authorized FEDCO distributor based in Santa Clara, California.
The FEDCO MSD is a horizontal multistage centrifugal high-pressure pump engineered for seawater and brackish-water RO feed duty, with an industry-leading hydraulic efficiency up to 87% and FEDCO's patented Water Bearing™ technology that uses product water (no oil or grease) for thrust handling.
? Made to Order — Call for Availability
Each FEDCO pump is built to order at the FEDCO factory in Monroe, Michigan, sized to the customer's specific duty point (flow, pressure, feed TDS, recovery, materials of construction).
Typical lead time: 6–8 weeks (Super Duplex 2507) or 3–6 weeks (other materials). Call for current availability.
Call +1-408-969-2688 or request a quote — ForeverPure's applications team will confirm the right model, options, lead time, and project pricing.
Theory of Operation
Multiple Super Duplex impellers stage the pressure rise from suction to discharge; FEDCO's Water Bearing™ takes the entire impeller-stack thrust load by using product water as a hydrostatic film, keeping the shaft in tension to eliminate buckling. Investment-cast Super Duplex internals resist chloride pitting and crevice corrosion. A removable mechanical-seal cartridge and rotatable inlet flange simplify installation and service.
Key Engineering Advantages
- Up to 87% hydraulic efficiency — among the highest in the industry for SWRO HP pumps
- Patented Water Bearing™ — no grease or oil to manage
- Investment-cast Super Duplex SS for chloride-rich service
- Balanced impellers and removable mechanical-seal cartridge for low maintenance
- Rotatable inlet flange and precision leveling feet for fast alignment
- Low-noise, smooth operation
Applications & Industries
Typical Applications
- Seawater RO (SWRO) high-pressure feed
- Brackish-water RO high-pressure feed
- Industrial / municipal RO
- Marine SWRO
- Oil & gas water injection / produced water
- Water reuse
Industries Served
- Municipal desalination
- Hotels, islands, and resorts
- Marine and offshore
- Oil & gas
- Industrial water reuse
Sizing & Selection
Model number convention: nominal feed flow in m³/h. Best efficiency is typically achieved within ±20% of nominal flow — for duty points outside this range, consult ForeverPure to confirm the correct frame size.
Provide your feed flow, required boost / discharge pressure, feed TDS, recovery, and temperature with your quote request. ForeverPure's applications team returns the correct model, options, lead time, and project-specific pricing.
Frequently Asked Questions
What is the FEDCO MSD-400?
The FEDCO MSD is a horizontal multistage centrifugal high-pressure pump engineered for seawater and brackish-water RO feed duty, with an industry-leading hydraulic efficiency up to 87% and FEDCO's patented Water Bearing™ technology that uses product water (no oil or grease) for thrust handling.
What is the FEDCO MSD-400 used for?
Typical applications include seawater ro (swro) high-pressure feed; brackish-water ro high-pressure feed; industrial / municipal ro. Industries served: municipal desalination, hotels, islands, and resorts, marine and offshore.
What materials of construction does the FEDCO MSD-400 use?
Wetted parts are shell, impeller, shaft: investment-cast super duplex ss. bearing: non-metallic (fedco water bearing™)., providing corrosion resistance suited to seawater and chloride-rich brackish-water service.
What feed-water types is the FEDCO MSD-400 suitable for?
Seawater, Brackish Water, Potable Water (20-micron prefilter). Operating temperature limit: <70°C (158°F).
Where can I get the FEDCO MSD-400 datasheet, performance curve, and pricing?
Datasheet, pump curve, drawings, and project-specific pricing for the FEDCO MSD-400 are available on request from ForeverPure Corporation. Submit a quote request through the website with your duty-point information and the applications team will respond with model selection, options, lead time, and pricing.
Is the FEDCO MSD-400 in stock, and what is the lead time?
The FEDCO MSD-400 is built to order at the FEDCO factory in Monroe, Michigan — each unit is sized to the customer's specific duty point, materials of construction, and configuration options. Typical lead times: 3–6 weeks for Duplex 2205 and 6–8 weeks for Super Duplex 2507. Call ForeverPure at +1-408-969-2688 or submit a quote request for current schedule and to confirm availability for your project.
What is the warranty on the FEDCO MSD-400?
Warranty: 18-month standard warranty. Extended-warranty options are available on request. ForeverPure provides factory-authorized installation, commissioning, and spare-parts support.
Need engineering support, sizing help, or a project quote?
Contact ForeverPure Corporation — Authorized FEDCO Distributor • Santa Clara, CA • +1-408-969-2688 • sales@foreverpure.com
