SDX

Summary

Product Identification

• Submersible borehole pumps for 6” (DN 150 mm) and 8” (DN 200 mm) wells.
• Models:
  • 6,8SDX: With external jacket and stages in stainless steel AISI 304.
  • 6,8SDXL: With external jacket and stages in stainless steel AISI 316.
• Impellers:
  • Radial impellers (6SDX(L) 18)
  • Mixed flow impellers (6SDX(L) 30-46-65, 8SDX(L) 78-97)
• Connection: Screwed connection ISO 228.
• Features: Delivery casing with built-in non-return valve.
• Applications: For water supply, civil and industrial applications, fire fighting applications, irrigation.
• Designation Example: 6 SDX L 30 / 17 indicates:
  • 6: Ø of the well in inches
  • SDX: Series
  • L: Cr-Ni-Mo steel AISI 316 construction
  • 30: Stage identification
  • 17: Number of stages

Operating Limits

• Liquid temperature: Up to 60 °C (90 °C for SDXL models).
• Max. sand quantity into the water: 100 g/m³.
• Duty: Continuous.

Electrical

• Motor Type: Rewindable motor CS series, 2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
• Winding: Water wetted winding in rewindable execution.
• Standards: Sized for connection to the pumps according to NEMA Standards.
• Standard Voltages (three-phase): 400 V; 400/690 V.
• Voltage Tolerance: +6% / -10%.
• Starting Requirements: For rated motor powers equal to or higher than 7.5 kW, one of the following types of starting is necessary: star/delta, soft starter, stator impedance or autotransformer.
• Insulation Class:
  • Class F for 4” motors.
  • Class E for 6-8” motors.
  • PVC coated wire for 10” motors.
• Frequency Converter: Motor suitable for operation with frequency converter.
• Protection: IP 68.
• Special Features on Request: Other voltages, 60 Hz frequency, other temperatures, encapsulated motor FK series.

Mechanical / Hydraulic

• Motor Operating Conditions (Cooling & Starts):
  • 4CS: Max. liquid temperature 35 °C, minimum flow velocity 0.08 m/s, max. 20 starts per hour (all types).
  • 6CS-R:
    • Max. liquid temperature 30 °C, minimum flow velocity 0.1 m/s, max. 15 starts per hour (4÷11 kW).
    • Max. liquid temperature 30 °C, minimum flow velocity 0.2 m/s, max. 15 starts per hour (13÷15 kW).
    • Max. liquid temperature 25 °C, minimum flow velocity 0.2 m/s, max. 15 starts per hour (18.5 kW).
    • Max. liquid temperature 25 °C, minimum flow velocity 0.2 m/s, max. 13 starts per hour (22÷30 kW).
    • Max. liquid temperature 40 °C, minimum flow velocity 0.1 m/s, max. 13 starts per hour (37 kW).
    • Max. liquid temperature 40 °C, minimum flow velocity 0.3 m/s, max. 6 starts per hour (45 kW).
  • 8CS-R:
    • Max. liquid temperature 25 °C, minimum flow velocity 0.3 m/s, max. 10 starts per hour (30÷45 kW).
    • Max. liquid temperature 25 °C, minimum flow velocity 0.3 m/s, max. 8 starts per hour (51÷75 kW).
    • Max. liquid temperature 25 °C, minimum flow velocity 0.3 m/s, max. 6 starts per hour (92 kW).
  • 10CS: Max. liquid temperature 25 °C, minimum flow velocity 0.50 m/s, max. 10 starts per hour (all types).
• Materials of Construction (Pump Components):
  • External jacket: Cr-Ni steel (6SDX, 8SDX), Cr-Ni-Mo steel (6SDXL, 8SDXL).
  • Suction lantern: AISI 304 (6SDX, 8SDX), AISI 316L (6SDXL), AISI 316 (8SDXL).
  • Upper cover: Cr-Ni-Mo steel AISI 316 (6SDXL, 8SDXL).
  • Delivery casing: Cr-Ni-Mo steel AISI 316L (6SDXL), Cr-Ni steel AISI 304 (6SDX, 8SDX), Cr-Ni-Mo steel AISI 316 (8SDXL).
  • Strainer: Cr-Ni-Mo steel AISI 316.
  • Valve set: Cr-Ni-Mo steel AISI 316.
  • O-ring valve: NBR.
  • Shaft: Cr-Ni-Mo steel AISI 316 (6SDX, 6SDXL, 8SDX), Cr-Ni-Mo steel AISI 329 (8SDXL).
  • Coupling set: Cr-Ni-Mo steel AISI 316/329.
  • Diffuser: Cr-Ni steel AISI 304 (6SDX, 8SDX), Cr-Ni-Mo steel AISI 316L (6SDXL), Cr-Ni-Mo steel AISI 316 (8SDXL).
  • Stage casing: Cr-Ni steel AISI 304 (6SDX, 8SDX), Cr-Ni-Mo steel AISI 316L (6SDXL), Cr-Ni-Mo steel AISI 316 (8SDXL).
  • Impeller: Cr-Ni steel AISI 304 (6SDX), Cr-Ni-Mo steel AISI 316L (6SDXL), Cr-Ni-Mo steel AISI 316 (8SDX, 8SDXL).
  • Wear ring: Teflon (PTFE).
  • Bearing bush: NBR (6SDX, 8SDX), HNBR (6SDXL, 8SDXL).
  • Cable guard: Cr-Ni-Mo steel AISI 316.
  • Screws: AISI 316.
• Materials of Construction (CS, CS-R Motor Components):
  • External frame: AISI 304 (CS-R 6”, 8”, CS 10” standard), AISI 316Ti for 10” (standard), Cr-Ni-Mo steel AISI 316 Ti (I-CS-R 6”, 8”, I-CS 10” AISI 316).
  • Motor flange: Cast iron GJL 200 EN 1561 (standard), Cr-Ni-Mo steel AISI 316 (I-CS-R 6”, 8”, I-CS 10” AISI 316).
  • Shaft end: Steel AISI 431 (standard), AISI 316 (I-CS-R 6”, 8”, I-CS 10” AISI 316, AISI 630 from 30 to 93kW), AISI 329 for 10” (standard), AISI 429 for 10” (I-CS-R 6”, 8”, I-CS 10” AISI 316).
  • Thrust bearing: Oscillating pads.
  • Bushings: Graphite (standard), Bronze for 8” motor.

Performance Data

Extensive performance charts, characteristic curves, and tabulated performance data (flow rate, total head, motor power) are available for various models and stages (e.g., 6SDX(L) 18, 30, 46, 65, 8SDX(L) 78, 97). See the official PDF for exact tabulated values, coverage charts, and characteristic curves.

Compliance

The electropumps 6SDX, 6SDXL series comply with the European Regulation no. 547/2012.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror