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Brand: Xylem
Lowara e-NSC End Suction Centrifugal Pump
Description
A back pull-out end suction pump built to EN 733 and ISO 5199
The Lowara e-NSC is a single-stage, horizontal, back pull-out end suction centrifugal pump. Xylem describes it as standardised to EN 733 for dimensions and ratings and to ISO 5199 for installation, maintenance, quality and safety (ISO 5199 applies to models 50-315, 65-315, 80-315, 80-316 and DN 100 and above), with potable-water approval to ACS and DM174. It is available as a close-coupled or block version and as a frame-mounted version with a bearing bracket, and it targets water transport, HVAC, district energy, firefighting, desalination, aquaculture and power plants.
Technical specifications
| Parameter | Specification |
|---|---|
| Nominal diameter | DN 32 to 300 |
| Flow | Up to 1,800 m3/h |
| Head | Up to 160 m |
| Power | 0.25 to 355 kW |
| Pressure | PN16 over the entire range |
| Liquid temperature | -25 to +140 C |
| Standards | EN 733, ISO 5199, Directive 2009/125/EC |
| Drinking water approval | ACS and DM174 |
| Motor | IE3 or higher, insulation class F (155 C), IP55, 50 and 60 Hz voltages |
| Flanges | Drilled to EN 1092 as standard; ASME drilling possible |
| Casing and impeller materials | From bronze to super-duplex |
| Wear rings | Stainless steel or duplex casing wear rings as standard |
| Shaft | Stainless steel, duplex available |
| Mechanical seals | Rubber bellows type as standard; cartridge seals single or double optional; seal chamber to EN 12756 |
| Bearings | Deep-groove ball bearings on standard bracket; dual row, grease or oil lubricated on advanced bracket |
| Bearing sealing | Lip seal (standard bracket) or labyrinth seal (advanced bracket) |
| Variable speed | Can be fitted with the Hydrovar pump controller |
Configurations
Three layouts are offered: the compact NSCS close-coupled pump rigidly coupled to a standard motor, the block version, and the frame-mounted version with a bearing bracket for heavier duty. Casing discharge is on the centreline to reduce turbulence, and the compact configuration is stated to reduce the footprint by 17 percent. Because the casing is rated PN16 across the range, the choice between sizes depends on the duty point, the liquid and the casing and impeller material rather than on pressure class.
Typical liquids and selection notes
Xylem lists drinking water, sea water and brine, brackish water, water with solvents, cleaning products or oil, swimming pool water and condensate as typical pumped fluids. Select material for the liquid (bronze for fresh water, duplex or super-duplex for chloride-bearing duties), choose the seal from the temperature and liquid, and use Hydrovar for variable duty, noting Xylem’s statement that cutting speed by 50 percent reduces power consumption by 87.5 percent. Other Xylem pumps are listed under pumps.
Documents and quotation
The attached Xylem e-NSC brochure gives the series data above. Send flow, head, liquid, temperature, material, motor voltage and frequency for a quotation, and confirm the final dimensions and approvals before ordering.
Datasheets & Documents
- Brochure Xylem Lowara e-NSC end suction pump series brochure Download
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About brand
Xylem works in water: pumps, treatment equipment and the instruments that measure water quality. Its products reach the market under several brand names, and the two on this page are YSI for water quality sondes and Lowara for pumps. The company was formed in 2011 and is based in Washington, D.C., USA. Seven Star LLC sources and supplies Xylem equipment for utilities, laboratories and contractors in Oman and the GCC.
Xylem brands listed: YSI and Lowara
The YSI EXO2 is a multiparameter sonde for unattended water quality monitoring. YSI describes it with seven universal sensor ports, one of them for a central antifouling wiper, powered by four D-cell batteries. With the matching sensors it reports temperature, conductivity, optical dissolved oxygen, pH, ORP, turbidity, algae pigments, fDOM and depth, among others. The sonde is sold as an instrument only; sensors and cables are separate items. Lowara pumps are listed as well, including the e-NSC, e-HM and e-SV models and the intelligent pump range.
Ordering Xylem equipment: what we need
For an EXO2, list the sensors required, the cable length, the depth option and whether a handheld or a data logger will read it. For a Lowara pump, send the full type from the nameplate, or the duty point: flow, head, liquid, temperature, motor power and supply voltage. A nameplate photo is best for a replacement pump.
Browse Xylem products by category: Pumps.
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Frequently Asked Questions
Which standards does the e-NSC follow?
EN 733 for dimensions and ratings and ISO 5199 for installation, maintenance, quality and safety, per the Xylem brochure.
What is the maximum flow and head?
Up to 1,800 m3/h and up to 160 m, from DN 32 to DN 300.
What is the temperature and pressure range?
-25 to +140 C at PN16.
Which motor efficiency is offered?
IE3 is standard across the range, with higher efficiency classes available.
Can it run at variable speed?
Yes, with the Hydrovar pump controller.
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