Overview KSB Etachrom

Summary

Product Identification

The KSB Etachrom B is a closed-coupled, single-stage annular casing pump designed for horizontal or vertical installation. It features a back pull-out design and rigid connection between the pump and motor on a common shaft. Dimensions and ratings conform to EN 733.

Main Applications

• Water supply systems
• Fire-fighting systems
• Spray irrigation systems
• General irrigation systems
• Drainage systems
• Hot-water heating systems
• Air-conditioning systems
• Industrial washing plants
• General industry
• Disposal of paint sludge
• Surface treatment systems

Fluids Handled

The pump is suitable for handling a variety of fluids, including:

• Drinking water
• Service water
• Hot water
• Cooling water
• Swimming pool water (0.4 to 1.4 mg/l free chlorine, max. 0.6 mg/l combined chlorine, pH value 6.9 to 7.7, water hardness 10 to 30 °dH, max. salt content 7 g/l)
• Process water
• Fire-fighting water
• Condensate
• Oil

A detailed overview of fluids handled, including application limits for percentage and temperature, and compatible shaft seal variants (Q1Q1M1GG, U3U3VGG, Q1Q1X4GG, BQ1EGG), is available in the official PDF. This includes specific conditions for deionised water (conductivity < 250 µS/cm, SiO₂ ≤ 10 mg/l), decarbonised water, fire-fighting water, cooling water, heating water (conductivity 100 to 800 µS/cm), slightly contaminated water, untreated water, rinsing water, dam water, partly desalinated water, and fully desalinated water.

Operating Limits

• Flow Rate (Q):
  • 50 Hz: ≤ 250 m³/h (≤ 69.4 l/s)
  • 60 Hz: ≤ 194 m³/h (≤ 54 l/s)
• Head (H):
  • 50 Hz: ≤ 105 m
  • 60 Hz: ≤ 104 m
• Fluid Temperature (T): -30 to +110 °C
• Operating Pressure (p): ≤ 12 bar (The sum of inlet pressure and shut-off head must not exceed this value.)
• Test Pressure: ≤ 16 bar

Maximum permissible P/n values and rotational speeds vary by pump size and nominal impeller diameter. See the official PDF for exact tabulated values.

Electrical

The drive system consists of KSB/Siemens surface-cooled IEC frame three-phase squirrel-cage motors.

• Standard Design:
  • Enclosure: IP55
  • Thermal class: F
  • Thermistors: 3 PTC
  • Mode of operation: Continuous operation S1
  • 50 Hz winding: 220-240 V/380-420 V (≤ 2.20 kW) or 380-420 V/660-725 V (≥ 3.00 kW)
  • 60 Hz winding: 440-480 V (≤ 2.60 kW) or 440-480 V (≥ 3.60 kW)
• Explosion-proof Version:
  • Enclosure: IP55 or IP54
  • Type of protection: EExe ll
  • Temperature class: T3
  • Mode of operation: Continuous operation S1
  • 50 Hz winding: 220-240 V/380-420 V (≤ 1.85 kW) or 380-420 V/660-725 V (≤ 2.50 kW)

A wide range of motor powers (kW) and corresponding approximate currents (~A) are available for both 50 Hz (400 V) and 60 Hz (460 V) operation at various speeds (1450 rpm, 1750 rpm, 2900 rpm, 3500 rpm). See the official PDF for exact tabulated values for specific pump sizes.

Mechanical / Hydraulic

• Design: Annular casing pump with back pull-out design, single-stage, horizontal or vertical installation.
• Pump Casing: Annular casing with welded-on or bolted-on pump feet, featuring replaceable casing wear rings.
• Impeller Type: Closed radial impeller with multiply curved vanes or free-flow impeller.
• Impeller Materials: Stainless steel 1.4571, 1.4408, 1.4308, available in projection-welded, laser-welded, or cast forms depending on the specific pump size.
• Shaft Seal: Single mechanical seal to EN 12756. Certain sizes (080-065-250, 100-080-200, 100-080-250) are fitted with a replaceable shaft sleeve in the shaft seal area.
  • Mechanical seal sizes include KU022SO, KU028SO, KU038SO, with specific nominal diameters (d1) and lengths (l1).
  • Common mechanical seal materials include Carbon (resin-impregnated), Silicon carbide, Tungsten carbide for primary and mating rings; EPDM, FKM, HNBR (e.g., Therban), FKM (double PTFE-coated) for secondary seals; and CrNiMo steel for springs and other parts.
• Materials of Construction:
  • Pump casing, Discharge cover, Shaft, Impeller, Casing wear ring, Shaft sleeve: CrNiMo steel 1.4571 (Impeller also 1.4408).
  • Intermediate piece, Drive lantern: Grey cast iron EN-GJL-250 (with cataphoresis or A 48 CL 35B).
  • Foot: S235 JR
  • O-ring: EPDM 70/80, HNBR 75, FKM80
  • Hexagon head bolt: Steel 8.8 A2A
  • Screw plug, Nut: CrNiMo steel A4
  • All listed materials are suitable for fluid temperatures from -30 to +110 °C.
• Technical Data: Tables detailing impeller diameter ranges, outlet width, and free passage for various pump sizes are available in the official PDF.
• Liquid Fill: The liquid fill volume of the pump varies by size. See the official PDF for exact tabulated values.
• Permissible Forces and Moments at Nozzles: Maximum permissible vertical forces (FVmax), horizontal forces (FHmax), and moments (Mtmax) at the pump nozzles vary by pump size. See the official PDF for exact tabulated values.

Automation

Automation options include:

• PumpDrive
• PumpMeter

Product Benefits

• Maintenance-free mechanical seal for operating reliability.
• Easy dismantling via back pull-out design, eliminating the need to remove the pump casing from piping.
• Optimised hydraulic components for high efficiency and reduced energy consumption.
• Corrosion-resistant wetted parts made of stainless steel (1.4571).
• Easy to service and durable due to replaceable casing wear rings.
• Long service life from high-quality, standardised mechanical seals to EN 12756.

Noise Characteristics

Surface sound pressure levels (LpA) vary based on rated power input and rotational speed (1450 rpm, 2900 rpm). An increase of +3 dB is noted for 60 Hz operation at 3500 rpm, and +1 dB at 1750 rpm. See the official PDF for exact tabulated values.

Coating and Preservation

• Coating and preservation are applied according to KSB standard AN 1897/54-09.
• The pump casing is supplied without coating.
• Drive lantern and intermediate piece receive a primer coat (hydro-dip primer, 40-50 µm dry film thickness).
• A quick-drying, water-thinned acrylate alkyd combination top coat (60 µm dry film thickness, suitable for temperatures up to 140 °C) is applied.

Ecodesign Information

• Minimum efficiency index (MEI) and year of construction are specified in the data sheet. The benchmark for most efficient water pumps is MEI ≥ 0.70.
• The efficiency of a pump with a trimmed impeller is typically lower than with a full impeller diameter.
• Operation with variable duty points can be made more efficient and economic using a variable speed drive.
• Information for disassembly, recycling, or disposal at end of life is provided in the installation/operating manual.
• Benchmark efficiency graphs for MEI = 0.70 (0.40) are available at http://www.europump.org/efficiencycharts.

FluidFuture Energy Efficiency Concept

Further information on KSB's FluidFuture energy efficiency concept is available at http://www.ksb.com/fluidfuture.

Acceptance Tests / Warranty

• Materials testing: Test report 2.2 available on request.
• Final inspection: Inspection certificate 3.1 to EN 10204 available on request.
• Hydraulic test: Duty point guaranteed to ISO 9906/2A (for Europe) or ISO 9906/3 (outside Europe).
• Optional tests (at extra charge): Performance test to ISO 9006, NPSH test.
• Warranty: Provided within the scope of valid delivery conditions.

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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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror