DESMI - Model NSLV & NSLH -Vertical (NSLV) & Horizontal (NSLH) End-Suction Centrifugal Pump
DESMI has high quality and well established utility/district energy pumps on the market, with focus on high energy efficiency and long life cycle.
The DESMI NSLV & NSLH pump is suitable for water applications (raw, treated, hot or cold) and meets the Utility special industrial market requirements for:
- High efficiency
- Low NPSH values
- Easy installation/service
- Specific materials
- Compact design
- Standardized to modular design
- Outstanding hydraulic design performance
- Spacer-coupling options for easy maintenance
- Robust shaft design
- High efficiency impeller with low NPSH values
- Self-priming ability with a separate built-on priming pump
Within utility/district energy applications the pumps are suitable for district heating (please check with us with your temperature levels) , district cooling (please consult with us if using seawater), water circulation, cooling towers distribution etc. diesel transfer, district heating, district cooling etc.
All pump sizes are available as self-priming pumps with a separate built-on priming pump of the water ring type, complete with suction strainer and water feed tank.
The priming pump is equipped with its own electric motor and is suitable for manual or automatic start/stop.
The pump can also be equipped with an air-operated ejetor priming unit.
The pump is an end-suction, radially split, single-stage centrifugal pump with connecting flanges according to international standards. The pump is designed for mounting with electric motors having different international flange dimensions.
The pump casing is equipped with a replaceable sealing ring.
The impeller is made with double-curved blades to ensure low NPSH-values and high efficiency.
The bearing unit is equipped with sturdy ball bearings and the small types are fitted with lifetime-lubricated bearings. In the larger types the lower bearing is a double bearing for which a lubrication point is provided.
A shaft in stainless steel with mechanical shaft seal of an approved brand is standard.
Capacity Range:
- 300-3500 m3/h 1300-15000 US gpm at 50 Hz
- 350-4000 m3/h 1500-19000 US gpm at 60 Hz
Pressure Range:
- 2-30 mLC ~ 6-100 ft at 50 Hz
- 4-40 mLC ~ 12-150 ft at 60 Hz
Temperature Range:
- With standard mech. shaft seal max. 80°C ~ 176°F.
- With special mech. shaft seal max. 120°C ~ 248°F.