RDLO

Summary

Product Identification

The KSB RDLO / RDLO V is an axially split volute casing pump designed for water supply applications.

Designation Key Example: RDLO V 350-690 A GB P M

• RDLO: Type series
• V: Design (Blank for Horizontal installation, V for Vertical installation)
• 350: Nominal discharge nozzle diameter [mm]
• 690: Nominal impeller diameter [mm]
• A: Impeller type (A, B)
• GB: Material variant (e.g., Grey cast iron / bronze, Nodular cast iron / chrome steel, Duplex stainless steel / duplex stainless steel)
• P: Shaft seal (Gland packing, Mechanical seal)
• M: Bearing lubrication (Grease, Oil lubrication, Fluid handled)

Operating Limits

• Sizes (DN):
  • 350 - 900 mm
  • 14 - 35 ″
• Flow Rate (Q):
  • ≤ 18000 m³/h
  • ≤ 79260 US.gpm
• Head (H):
  • ≤ 300 m
  • ≤ 984 ft
• Operating Pressure (p):
  • ≤ 30 bar
  • ≤ 435 psi
• Fluid Temperature (T):
  • ≥ 0 - ≤ +140 °C
  • ≥ +32 - ≤ +284 °F
  • Note: Standard design up to 80 °C [176 °F] max.
  • Note: Max. permissible temperature for drinking water approved coating is 60 °C [140 °F], approved for drinking water up to 25 °C [77 °F] max.
• Max. Permissible Solids Content:
  • Without cyclone separator:
    • Gland packing: 50 ppm (or mg/l)
    • Balanced mechanical seal: 50 ppm (or mg/l)
  • With cyclone separator:
    • Gland packing: 100 ppm (or mg/l)
    • Balanced mechanical seal: 100 ppm (or mg/l)

Feed Water

RDLO / RDLO V pumps are designed for pumping water and other fluids with a low solids content.

Main Applications:

• Waterworks
• Desalination plants
• Pressure boosting
• Water transport
• Service water and cooling water for power stations and industry
• Irrigation pumping stations
• Drainage pumping stations
• Fire-fighting systems
• Shipbuilding
• District heating systems and district cooling systems

Fluids Handled (Examples):

• Brackish water
• River water, lake water and groundwater
• Stormwater
• Service water
• Fire-fighting water
• Cooling water
• Condensate
• Heating water
• Drinking water

Mechanical / Hydraulic

Design Details:

• Volute casing pump
• Horizontal installation / vertical installation
• Single-stage
• Nominal diameter of the discharge nozzles: 350 mm - 700 mm [14 inches - 28 inches]
• Pump casing: Axially split volute casing with integrally cast pump feet, replaceable casing wear rings. Mating dimensions to EN or ASME.
• Impeller type: Double-entry radial impeller (optionally with impeller wear rings).
• Pump shaft: Completely dry shaft, shaft protecting sleeves in the seal area (for rolling element bearing variants).
• Shaft seal: Gland packing or balanced mechanical seal.
• Bearings:
  • For horizontal installation: Grease-lubricated rolling element bearings, or oil-lubricated rolling element bearings.
  • For vertical installation: Grease-lubricated rolling element bearings (top), product-lubricated rubber plain bearing (bottom).
• Directions of rotation (seen from the drive end): "Right" = clockwise, "Left" = anti-clockwise.
• Flanges: Drilled to DIN EN 1092 – flat face (type A) or raised face (type B); Drilled to ASME B16 – flat face (type FF) or raised face (type RF). Special flanges available on request.

Material Variants (Key Components):

• GB: Volute casing (Grey cast iron), Pump shaft (Stainless steel), Impeller (Bronze)
• GC: Volute casing (Grey cast iron), Pump shaft (Stainless steel), Impeller (Stainless steel)
• SB: Volute casing (Nodular cast iron), Pump shaft (Stainless steel), Impeller (Bronze)
• SC: Volute casing (Nodular cast iron), Pump shaft (Stainless steel), Impeller (Stainless steel)
• DD35: Volute casing (Duplex steel), Pump shaft (Duplex steel), Impeller (Duplex steel)
  • Note: PREN ≥ 35 only applies to main cast components for DD35.

Coating and Preservation:

• Indoor Installation: Epoxy resin base paint, colour RAL 5002 (ultramarine blue) for exterior and bearing housing. Interior options include epoxy resin base primer (colour at discretion) or epoxy resin base paint RAL 5015 (sky blue, drinking water approved).
• Outdoor Installation: Polyurethane base paint, colour RAL 5002 (ultramarine blue) for exterior and bearing housing. Interior options include epoxy resin base primer (colour at discretion) or epoxy resin base paint RAL 5015 (sky blue, drinking water approved).
• Note: DD35 material variant interior is sand-blasted SA 2 ½ (no coating).
• Note: Coatings are generally permissible for fluid temperatures ≤ 80 °C [176 °F].

Installation Types:

• Fig.0: Bare shaft pump.
• 2E: Pump and motor on foundation rails.
• 3E: Pump and motor on a common base frame.
• 4E: Pump and motor on separate base frames.
• DJ: Pump and motor on separate levels.
• DP: Motor on separate drive lantern.

Scope of Supply (Standard):

• Pump
• Drive
• Baseplate
• Coupling
• Coupling guard
• Universal-joint shaft
• Fasteners for pump and base frame

Optional Accessories:

• Vibration monitoring equipment
• Pt100 resistance thermometer
• Constant level oiler
• Pressure gauge
• Measuring nipple for shock pulse measurement
• Cyclone separator
• Manually or automatically actuated vent valves
• Manually actuated drain valves
• PumpMeter

Electrical

Motor options include "Without motor", "Low-voltage motor to KSB standard", "Low-voltage motor different from KSB standard", and "Special motor (high-voltage/NEMA/with frequency inverter/etc.)". Specific electrical parameters are not provided in this extract.

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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 for any project must always match the specific OEM PDF revision used for that project.

Official datasheet (PDF)

Lenntech datasheet mirror