RWCP/RWCN

Summary

Product identification

• Type series: RWCP, RWCN
  • RWCP: with discharge pipe
  • RWCN: without discharge pipe
• Pump Type: Vertical, centrifugal pumps designed for wells, ditches, and tanks.
• Impeller Types:
  • A (semi-open)
  • C (channel)
  • V (vortex)
• Designation Example: RWCP 100 / 250 V (indicates Type series, DN discharge nozzle [mm], DN impeller [mm], and Impeller type).

Operating limits

• Capacity, max.:
  • 700 m³/h (50 Hz)
  • 890 m³/h (60 Hz)
• Head, max.:
  • 100 m (50 Hz)
  • 95 m (60 Hz)
• Operating Temperature Range: -10 ºC to 100 ºC
• Operating Pressure, max.: 16 bar
• Operating Speed, max.:
  • 3000 rpm (50 Hz)
  • 3600 rpm (60 Hz)
• Max. Length of Submerged Pipe: 5785 mm

Feed water

• Suitable for neutral or aggressive liquids with significant solid content.
• Applications include:
  • Water with sand
  • Sewage water
  • Water with mill scale
  • Canal water
  • Drain water
  • Chemical sludges
  • Sea water with cinder
  • Hydrocarbons
• Solid Content Limits:
  • Semi-open impeller (A): ≤ 3% solids, ≤ 4 g/l sand contents
  • Vortex impeller (V): ≤ 6% solids, ≤ 5 g/l sand contents (Note: Severe hydroabrasive wear occurs if solids contents of approx. 0.5 g/l or higher are combined with circumferential speeds exceeding 20 m/s or low-flow conditions to the left of the duty point).
• Maximum Solid Size (varies by pump size and impeller type):
  • Semi-open impeller (A): 16.5 mm to 74 mm
  • Channel impeller (C): 30 mm to 84 mm
  • Vortex impeller (V): 35 mm to 100 mm

Mechanical / hydraulic

• Design:
  • Volute pump casing with axial suction and radial impulsion.
  • Single stage impeller, available in semi-open (A), channel (C), or vortex (V) variants.
  • RWCP models are equipped with a discharge pipe to the outside of the base plate.
  • Designed for vertical installation in non-pressurized tanks as standard; special executions for very low pressurized tanks are available upon demand.
• Materials:
  • Key components include Volute Casing, Pump Cover, Pump shaft(s), Impeller, Pedestal, Wear Rings, Shaft Sleeve, Friction Bearing bush, Discharge Pipe, Intermediate pipe, and Base Plate.
  • Materials used across variants include Grey cast iron (JL1040 / GJL-250), Cast chrome nickel molybdenum steel (CF8M / 1.4408), Tempering steel (F-114 / C45), Hot Rolled chrome nickel molybdenum steel (AISI-316L / 1.4435), Cast chrome steel (CA6NM / 1.4313), Chrome nickel steel (AISI-431B / 1.4057), Special PTFE (TFM, Graphite charged), Steel (St 37.0, F-111 / C15).
  • See the official PDF for exact tabulated values for each material variant.
• Shaft Seal:
  • Standard: Lip seal.
  • Options: Single mechanical seal (cartridge or non-cartridge) or gland packing.
  • Mechanical seal size Ø: 50 mm, 65 mm, 75 mm (varies by pump size and impeller type).
• Drive:
  • IEC frame electric motor IM V1.
• Bearings / Lubrication:
  • External angular contact ball bearings (e.g., 2 x 7307, 2 x 7310, 2 x 7314 + 6314) are located above the base plate, grease lubricated with external grease nipples.
  • TFM (Special PTFE, Graphite charged) product lubricated friction bearing bushes are used in the pump cover and intermediate column bearing supports.
  • External suitable fluid (e.g., fresh clean water) must be provided for friction bearing bush lubrication in case of poor lubricant, abrasives, or solids, with flow rates ranging from 250 l/h to 650 l/h per bearing.
  • An electric driven grease pump can be supplied as an option.
• Coupling:
  • Standard: Flexible, rubber plug type coupling.
  • Options: Other types available upon request.
  • Coupling Guard: Transparent plastic protections are supplied as standard; metallic protections can be supplied as an option.
• Base Plate:
  • Standard: Rectangular shaped, non-sealing design.
  • Options: Circular base plate; blind flange shaped plates with special bearing bracket and mechanical seal can be supplied for tank sealing.
• Dimensions:
  • Detailed dimensions, including "O" lengths (submerged pipe length), "D" lengths (total length), available discharge flange dimensions, and dimensions per motor size, are provided in the full datasheet.
  • See the official PDF for exact tabulated values.
• Coating:
  • Single coat of 40 microns thickness water basis enamel with finish colour blue RAL 5010.
  • Painted surface maximum temperature: 70 ºC.
  • Other coatings available upon request.

Certifications

• Certified quality management according to ISO-9001.
• This series can be supplied as ATEX (94/9/EC) compliant.

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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 original OEM PDF datasheet. Contractual data for any project must always match the specific OEM PDF revision used for that project.

Official datasheet (PDF)

Lenntech datasheet mirror