WKTR

Summary

Product identification

The WKTR/WKB series consists of vertical, high-pressure centrifugal pumps. They are designed as per API 610 10th edition, Category VS6.

The WKB variant is available without a can execution, on request.

Designation:

• WKTR: Type series
• 100: Nominal diameter of discharge nozzle in mm
• 5: Number of stages

Operating limits

• Pump sizes: DN 40 to DN 150
• Capacity (Q): Up to 111 l/s (400 m³/h)
• Total head (H): Up to 500 m
• Speed (n): Up to 3600 rpm
• Operating pressure: Up to 51 kg/cm²
• Operating temperature: -40 to 200 °C

Mechanical / hydraulic

Applications: WKTR pumps are suitable for hydrocarbons in refinery and petrochemical applications, as well as for ammonia and condensate handling where NPSHA (Net Positive Suction Head Available) is critical.

Design: These are vertical, radially split, ring section pumps featuring radial single-entry, multistage impellers. Stages are sealed by O-rings and clamped together by tie rods. A provision on the can allows mounting the complete pump on a separate mounting plate for enhanced structural stability. Suction and discharge nozzles are always horizontal and in-line.

Materials of Construction:

• Distributor casing & Can: ASTM A 516 Gr. 70, ASTM A 516 Gr. 60, SS 304 / SS 316 (on request)
• Suction casing: WCB, CA6NM, CF8M
• Discharge casing: WCB, CA6NM, CF8M
• Stage casing: WCB, CA6NM, CF8M
• Stuffing box housing: WCB, CA6NM, CF8M
• Diffuser suction: CA6NM, CF8M
• Diffuser: CA6NM, CF8M
• Pump/Intermediate/Drive shaft: AISI 410
• Impeller suction: CA6NM, CF8M
• Impeller (stage): CA6NM, CF8M
• Impeller ring: 1.4024.19, CF8M, NiCi
• Wearing ring: Cr HARD 400, CF8M col. Coated, 1.4024.19
• Spacer sleeve: NiCi, AISI410, AISI316
• Column pipe: A 105 + A 106 Gr. B, SS 304
• Tie Rod: B8M

Key Features:

• Column Pipe: Features higher diameters for lower frictional losses and offers various combinations to meet specific requirements.
• Journal Bearing: Includes bearing spiders and high-grade carbon bearings supported by the pumping medium, with a reduced bearing span for increased rotor stability.
• Conical Coupling: Designed for reverse rotation and provides excellent alignment.
• Hydraulics: Offers higher efficiency across a wider flow range and interchangeability of impeller and diffuser with WK series pumps.
• Radial Carbon Bearing: Positioned on the rear side of the suction impeller to prevent dry running.
• Suction Impeller: Engineered for lower NPSHr.
• Motor Lantern: A rigid component serving as a drive stool, providing a controlled location diameter for easy flange mounting of the motor.
• Thrust Bearing: An oil-lubricated four-point contact ball bearing suitable for reverse rotation and designed to handle the entire pump load. Oil mist lubrication is available on request.
• Shaft Sealing: The shaft seal housing accommodates all combinations of seals as per API 682. A spacer-type coupling allows mechanical seal removal without disassembling the drive. Gland packing execution is optional. A cooled stuffing box is provided for high-temperature applications. The in-board seal is subjected to suction pressure, and an adaptor with a carbon bearing acts as a radial bearing, extending seal life.
• Protective Covers: All exposed rotating parts are equipped with protective covers for human safety.
• Distributor Casing: Designed to meet API requirements, with ASME suction and discharge flanges that are in-line. Both suction and discharge chambers are designed for the same pressure rating.
• Can: Designed for a separate mounting plate arrangement, featuring through-bolting between the can and distributor casing, and designed for discharge pressure.

Certifications

• ISO 9001 : 2000
• ISO 14001 : 2004

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

Official datasheet (PDF)

Lenntech datasheet mirror