Etanorm

Summary

Product identification

The KSB Etanorm is a series of standardised water pumps, specifically centrifugal pumps with shaft seals. These pumps are available in both fixed speed and variable speed versions, operating at 50 Hz or 60 Hz, and are designed for use in Europe (EU), the Middle East (ME), and North Africa (NA).

Key design features include:

• Volute casing pump
• Horizontal installation
• Back pull-out design
• Single-stage
• Dimensions and ratings to EN 733
• Radially split volute casing with integrally cast pump feet
• Replaceable casing wear rings (optional for pump casing material C)

Available pump types include:

• ETN: Standard Etanorm
• ETNE: Etanorm complementary sizes
• ETNF: Etanorm fire-fighting pump

Operating limits

The Etanorm pumps are designed for a wide range of operating conditions:

• Flow rate (Q):
  • ≤ 1930 m³/h (50 Hz)
  • ≤ 2321 m³/h (60 Hz)
• Head (H): ≤ 160 m (both 50 Hz and 60 Hz)
• Fluid temperature (T): ≥ -30 °C to ≤ +140 °C
• Operating pressure (p): ≤ 16 bar

Specific pressure and temperature limits based on material variants:

• GG, GB, GC (Cast Iron/Bronze):
  • Fluid temperature: -30 to +140 °C
  • Discharge pressure p₂: 16/10 bar
  • Test pressure: 21/15 bar
• SG, SB, SC (Nodular Cast Iron):
  • Fluid temperature: -30 to +140 °C
  • Discharge pressure p₂: 16 bar
  • Test pressure: 25 bar
• BB (Bronze):
  • Fluid temperature: -30 to +140 °C
  • Discharge pressure p₂: 10 bar
  • Test pressure: 15 bar
• CC (Stainless Steel):
  • Fluid temperature: -30 to +140 °C
  • Discharge pressure p₂: 16 bar
  • Test pressure: 21 bar

For hot water heating systems to DIN 4752, Section 4.5, application limits must be observed. For fluid temperatures >140 °C, the Etanorm SYT variant is recommended.

Feed water

The pumps are suitable for handling clean or aggressive fluids that are not chemically and mechanically aggressive to the pump materials.

Common fluids handled include:

• Seawater
• Brackish water
• Drinking water
• Hot water
• Service water
• Fire-fighting water
• Brine
• Cleaning agents
• Condensate
• Oils

Detailed compatibility with various fluids, including specific temperature ranges and recommended material variants, is available in the official PDF datasheet. Examples include:

• Brackish water: ≤ 25 °C, with notes on ammonia (NH₃) and hydrogen sulphide (H₂S) content.
• Heating water: Up to ≤ 140 °C depending on shaft seal and material variant, with requirements for O₂ content.
• Cooling water with antifreeze (ethylene glycol basis, pH ≥ 7.5): Up to ≤ 110 °C.
• Pure water: ≤ 60 °C, with electrical conductivity at 25 °C ≤ 800 µS/cm.
• Swimming pool water: Up to ≤ 60 °C (fresh water) or ≤ 40 °C (seawater, filtration, water features).
• Drinking water: ≤ 60 °C, requiring specific material variants (PB or PP) and approvals (ACS, UBA, WRAS).
• Oils/emulsions: Diesel fuel, lubricating oil, drilling emulsion, oil-water emulsion up to ≤ 80 °C.
• Brewery applications: Beer mash and beer wort up to ≤ 100 °C.

Electrical

Fixed Speed Version

• Motor: KSB/Innomotics surface-cooled IEC three-phase current squirrel-cage motor.
• Efficiency class (to IEC 60034-30):
  • IE3: up to 55 kW and from 250 kW
  • IE4: from 75 kW to 200 kW
• Rated voltage (50 Hz):
  • 230 V / 400 V (≤ 2.20 kW)
  • 400 V / 690 V (≥ 3.00 kW)
• Rated voltage (60 Hz):
  • • / 460 V (≤ 2.20 kW)
  • 460 V / - (≥ 3.00 kW)
• Type of construction: IM B3
• Enclosure: IP55
• Duty type: Continuous duty S1
• Thermal class: F with temperature sensor (1 PTC thermistor for size 80/90, 3 PTC thermistors from size 100).
• Explosion-proof design: Available with efficiency class IE3 and specific ATEX markings (e.g., II 3G Ex ec IIC T3 Gc, II 2G Ex eb IIC T3 Gb).

Variable Speed Version

• Motor: KSB SuPremE motor (magnetless synchronous reluctance motor), IEC-compatible.
• Efficiency class (to IEC TS 60034-30-2:2016): IE4 / IE5.
• Rated power: 0.55 kW to 45 kW.
• Rated speed: 1500 rpm or 3000 rpm.
• Frequency (PumpDrive input): 50 Hz / 60 Hz.
• Voltage (PumpDrive input): 380 V to 480 V.
• Enclosure: IP55.
• Frequency Inverters (PumpDrive 2 / PumpDrive 2 Eco / PumpDrive R):
  • Self-cooling, modular design for continuously variable speed control.
  • Mains voltage: 3~ 380 V AC -10 % to 480 V AC +10 %.
  • Mains frequency: 50 Hz to 60 Hz ± 2 %.
  • PumpDrive R: Extended power range with nominal power of 400 kW (standard) or up to 1400 kW (on request).
• Automation & Monitoring:
  • PumpMeter: Intelligent pressure transmitter with on-site display for measured values and operating data.
  • KSB Guard: System for monitoring pump condition via temperature and vibration sensors, accessible via app and web portal.

Mechanical / hydraulic

Shaft Seal

• Gland packing
• KSB single mechanical seal
• KSB cartridge seal
• Single mechanical seals and double mechanical seals to EN 12756
• Shaft equipped with replaceable shaft sleeve in the shaft seal area.
• Various seal codes are available, each with specific material compositions and fluid temperature ranges (e.g., ≥ -30 to ≤ +140 °C for AQ1EGG). See the official PDF for exact tabulated values.

Impeller Type

• Closed radial impeller with multiply curved vanes.

Bearings

• Standard: Deep groove ball bearing (floating bearing assembly), available with grease or oil lubrication.
  • Examples: 6305 2Z C3 (grease), 6305 C3 (oil).
• Reinforced: Deep groove ball bearing (floating bearing assembly), available with grease or oil lubrication.
  • Examples: 6310 2Z C3 (grease), 6310 C3 (oil).
• Specific bearing types are listed in the official PDF for different bearing bracket sizes (e.g., WS_25_LS, WS_50_LR).

Materials

The Etanorm pumps offer a large variety of materials to match the pump to the fluid handled.

• Volute casing & Casing cover: Grey cast iron EN-GJL-250, Bronze CC480K-GS, Nodular cast iron EN-GJS-400-15, Stainless steel 1.4408.
• Shaft: Tempered steel C45+N, Chrome steel 1.4057+QT800, Duplex stainless steel 1.4462.
• Impeller: Grey cast iron EN-GJL-250, Bronze CC480K-DW, Stainless steel 1.4408, Cast steel 1.4008.
• Bearing bracket: Grey cast iron EN-GJL-250, Nodular cast iron EN-GJS-400-18-LT.
• Gaskets: DPAF, asbestos-free.
• Casing wear ring: JL / lamellar graphite cast iron, Stainless steel (CrNiMoST), Bronze CC495K-GS.
• Shaft sleeve: Stainless steel (CrNiMoST).
• Shaft protecting sleeve: Stainless steel (CrNiMoST), Chrome steel 1.4122+QT750.
• Fasteners (Studs, Screw plugs, Nuts): Steel 8.8, A4-70/ A193 Gr. B8M Cl. 2, A4/ AISI 316.

Technical Data

The datasheet provides detailed technical data for various pump sizes, including impeller outlet width, free passage diameter, nominal impeller diameter, and maximum/minimum speed limits. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror