EX series 50/60Hz

Summary

Product identification

This document describes AISI 316 stainless steel electric borehole pumps, suitable for 50Hz and 60Hz applications. The pumps are designed for efficient and reliable pumping of corrosive liquids in marine, residential, municipal, and industrial applications. They are easily installed in deep wells of standardized sizes and are driven by submersible motors with shaft-ends and flanges according to standard norms.

The product line includes various series of borehole electric pumps:

• 8ERCX: 8” borehole electric radial encapsulated pumps.
• 8EX: 8” borehole electric mixed-flow pumps.
• 8EX-110 / 8EX-140: 8” borehole electric mixed-flow pumps.
• 10EX: 10” borehole electric mixed-flow pumps.
• 10EX-240 / 10EX-300: 10” borehole electric mixed-flow pumps.
• 12EX: 12” borehole electric mixed-flow pumps.
• 14EX-650: 14” borehole electric mixed-flow pumps.
• 16EX-1000: 16” borehole electric mixed-flow pumps.

Operating limits

• Max. solids contents: 100 g/m³
• Max. water temperature: 30°C
• Max. running time with Q=0: 2 min
• Minimum well internal diameter (for 8ERCX series): 8”

Feed water

Pump performances are referenced to cold water (20°C) at atmospheric pressure (1 bar). Catalogue data refers to liquids with:

• Density: 1000 kg/m³
• Kinematic viscosity: Not higher than 1 mm²/s

Mechanical / hydraulic

The pumps feature a radial centrifugal multistage wet end with an incorporated retaining valve in the delivery bowl and an external casing.

Materials of Construction (for 8ERCX series, generally AISI 316 stainless steel execution):

• Delivery bowl: AISI 316 stainless steel
• Retaining valve: AISI 316 stainless steel
• Diffuser: AISI 316 stainless steel
• Impeller: AISI 316 stainless steel
• Journal bearing: PTFE
• Wear ring: POM
• External casing: AISI 316 stainless steel
• Shell: AISI 316 stainless steel
• Pump shaft: AISI 329 DUPLEX stainless steel
• Coupling: AISI 329 DUPLEX stainless steel
• Suction bowl: AISI 316 stainless steel
• Suction grid: AISI 316 stainless steel

Performance

Performance characteristics are guaranteed according to ISO 9906 Grade 3B norms.

Overall Performance Range (across all series):

• Capacity: up to 1200 m³/h
• Head: up to 690 m
• Power: up to 400 kW

Specific Series Performance Ranges (at 50Hz, 2 poles):

• 8ERCX:
  • Capacity: up to 85 m³/h
  • Head: up to 690 m
  • Power: up to 75 kW
• 8EX:
  • Capacity: up to 205 m³/h
  • Head: up to 465 m
  • Power: up to 110 kW
• 8EX-110 / 8EX-140:
  • Capacity: up to 215 m³/h
  • Head: up to 340 m
  • Power: up to 110 kW
• 10EX:
  • Capacity: up to 390 m³/h
  • Head: up to 485 m
  • Power: up to 185 kW
• 10EX-240 / 10EX-300:
  • Capacity: up to 455 m³/h
  • Head: up to 295 m
  • Power: up to 185 kW
• 12EX:
  • Capacity: up to 660 m³/h
  • Head: up to 320 m
  • Power: up to 250 kW
• 14EX-650:
  • Capacity: up to 840 m³/h
  • Head: up to 195 m
  • Power: up to 300 kW
• 16EX-1000:
  • Capacity: up to 1200 m³/h
  • Head: up to 170 m
  • Power: up to 400 kW

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