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FEDCO - Model MSS Series -Multistage Centrifugal High Pressure Feed Pumps
MSS pumps are multistage centrifugal feed pumps specifically designed for brackish and seawater reverse osmosis service, representing the most reliable high-pressure feed pump available today. Loaded with unique features such as the patented Water Bearing™ thrust bearing, product-lubricated shaft bearings, and maintenance-free design, the MSS ensures years of trouble-free operation. The MSS also features one of the longest warranties in the industry – a full 18 months of coverage from the date of product installation.
Multistage centrifugal high-pressure feed pumps that provide a new level of reliability and efficiency in seawater reverse osmosis pumps
- 7.5 – 295 m3/h (33 – 1300 gpm)
- Pressures to 83 bar (1200 psi)
- Duplex SS Pressure Containment
- Impeller and Diffuser are 316 SS – electropolished & passivated
- Shaft seal operates at low pressure
- Flexible disc coupling
- Bearing drain line (low pressure)
- 316 SS shell support bracket
- Precision leveling foot
- Grooved end pipe joints
- Duplex SS 2205 housing
- Flanged construction for easy internal inspection
- Inlet rotatable in 90° increments
- Easy shaft alignment
- Integrated motor adapter (anodized aluminum alloy)
- 316L SS stages – passivated & electropolished – proven in hundreds of SWRO applications
- WATER BEARING™
All MSS pumps can be equipped with a high inlet pressure option to allow inlet pressure to 70 bar. This unique design features:
- Use of low-cost, standard mechanical seals, operating at low pressure (typically 1-2 bars)
- Total protection of the motor from pump thrust loads - a major problem with high inlet pressure operation.
- Pump shaft kept in tension -no potential for shaft buckling
- Handles total axial thrust -no load on motor bearings
- Never needs lubrication
- Bearing cooled by feed water -no ambient temperature limit
- 316L SS stages, passivated and electropolished