Datasheet summary
WKTB
PDF datasheet mirror for WKTB (KSB Pumps). Verify with OEM before design.
Summary
Product identification
The KSB WKTB is a Vertical Ring-section Pump.
Designation Key Example: WKTB 7/1+1...n
- WKTB: Type series
- 7: Size
- 1: Suction stage
- 1...n: Number of subsequent stages
Operating limits
- Main applications: Condensate transport
- Fluids handled: Condensate
Operating Properties
| Characteristic | Value (50 Hz) | Value (60 Hz) |
|---|---|---|
| Flow rate Q | ≤ 1500 m³/h | ≤ 1800 m³/h |
| Head H | ≤ 370 m | |
| Fluid temperature T | ≤ 100 °C | |
| Pump suction pressure p_s | -1 to 4.5 bar | |
| Pump discharge pressure p_d | ≤ 40 bar | |
| Speed n | ≤ 1500 rpm | ≤ 1800 rpm |
Notes: Head is at Qmin, ρ = 1000 kg/m³. Discharge pressure is at Q = 0, ρ = 1000 kg/m³.
Electrical
- Drive: Electric motor, type of construction V1, Vertical installation.
Mechanical / hydraulic
Design Details
- Design: Vertical ring-section pump, Can-type pump design, Multistage, Radial hydraulic systems, Single-entry impellers (subsequent stage(s)), Double-entry impellers (suction stage).
- Balancing device:
- WKTB 6: Axial thrust balancing by balance drum
- WKTB 7 to 9: Axial thrust balancing by hydraulically balanced impellers of the subsequent stages
- Shaft seal: Gland packing; Single mechanical seal, or double mechanical seal in tandem arrangement (both in cartridge design); Barrier fluid line.
- Coupling: Flexible coupling, Flexible disc coupling, Slip clutch, Gear coupling with grease fill, Flexible spacer-type coupling. Spacer-type coupling includes an additional coupling with removable spacer.
- Bearings:
- Radial bearings: Product-lubricated plain bearing.
- Combined thrust and radial bearing: Rolling element bearing or pivoted segmental thrust bearing; Oil bath lubrication; Air-cooled (WKTB 6) / water-cooled (WKTB 7 - 9).
- Nozzle position: Horizontal above the installation floor, 180° opposite to each other, Optionally suction nozzle arranged below floor.
- Connections: Connecting dimensions to DIN EN or ASME.
Installation
- The can is arranged in a pit below the installation floor.
- The pump set is connected to the structure via its baseplate.
- Installation depths (e.g., impeller, can, suction nozzle) are determined for each order.
Installation Depths WKTB 7 to 9 (VU Installation Type)
| Size | ESmin (mm) | ESmax (mm) | A (mm) | B | C (mm) | Dmin (mm) | ⃞ E (mm) | ⃞ F (mm) |
|---|---|---|---|---|---|---|---|---|
| 7 | 400 | EM - 600 | 600 | NPS12 | DN 300 | 600 | 1040 | 1700 |
| 8 | 450 | EM - 600 | 660 | NPS14 | DN 350 | 700 | 1150 | 1800 |
| 9 | 450 | EM - 800 | 760 | NPS16 | DN 400 | 800 | 1350 | 1900 |
Note: ES is installation depth of the suction nozzle. EM is installation depth of the can.
Coating and Preservation
- Wetted surfaces: No coating is applied.
- Non-wetted surfaces: Sand-blasted, then provided with a priming coat, an intermediate coat, and a top coat. No coating on the mechanical seal cartridge and drive coupling.
- Preservation: To KSB standard.
Materials
An overview of available materials for various parts includes:
- Casing components (Distributor, Suction stage, Subsequent stage, Can, Diffuser): Steel, Chrome steel, Grey cast iron, Cast steel, Cast chrome steel.
- Shafts: Steel, Chrome steel.
- Impellers: Grey cast iron, Cast steel, Cast chrome steel.
- Motor stool: Steel.
- Casing wear ring: Special grey cast iron, Cast chrome steel.
- Shaft sleeve: Chrome steel.
- Bearing bush: Steel/carbon, Chrome steel/carbon.
- Column pipe: Steel, Chrome steel.
- Spacer-type coupling: Steel, Chrome steel.
- Tie bolt: Steel which is creep-resistant at elevated temperatures.
See the official PDF for exact tabulated values of material variants per part.
Scope of Supply
Standard design includes:
- Pump including motor stool
- Can
- Baseplate with adjusting screws and plates
- Fasteners for pump and base frame
- Special tools required
- Piping up to customer's connection (to installation plan) including valves to P&I diagram
Special variants may include:
- Drive
- Drive coupling
- Strainer in the inlet pipe
- Minimum flow control valve
- Terminal box
- Spare parts
- Instruments
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 for the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.