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Worthington® LNN Between Bearings Pump - Axially Split, Single Case
Flowserve Single Case Pumps Available to Order

Worthington® LNN Between Bearings Pump - Axially Split, Single Case

The LNN series of pumps is the outcome of many years of experience in the design and manufacture of axially split casing pumps. State-of-the-art pump design technology from Flowserve has resulted in superior pump designs which offer broad hydraulic coverage, quiet operation, low NPSH requirements, high operating efficiency and low total cost of ownership.
Flow Rate Up To 30,000 m³/h (132,000 gpm)
Head Up To 300 m
Max Pressure 40 bar (580 psi)
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🔧 NZ-based technical support 📄 Trade pricing on request 🕐 Quotes typically same day

Applications

  • Power
  • Chemicals
  • Mining
  • Water
  • Oil & Gas
  • General Industries

Key Features

  • Temperatures from -30°C (-20°F) to 140°C (285°F)
  • Double volute design minimizes hydraulic radial forces in any condition down to the minimum flow, thereby reducing shaft deflection and increasing the service life of bearings, seals and wear rings
  • Separate 360° bearing housings provide superior bearing stability and shaft support while easing maintenance
  • Perfect shaft alignment is assured by a full register fit to the casing
  • Axially split casing with suction and discharge nozzles integrally cast in the lower casing half permits pump disassembly without disturbing the piping or driver
  • Upper casing half does not have to be removed to access bearings, packing, mechanical seals, sleeves or sleeve nuts
  • Nozzle flanges meet the dimensional requirements of ASME B16.1, B16.5 or ISO 7005 part 1 or 2
  • Flanges are available in sizes from Class 125 to Class 300 (ISO PN10 to PN63)

Downloads

Worthington® LNN Between Bearings Pump - Axially Split, Single Case Brochure PDF Worthington® LNN Between Bearings Pump - Axially Split, Single Case Manual PDF Worthington® LNN Between Bearings Pump - Axially Split, Single Case Maintenance Checklist PDF

Technical specifications

View full specification table
Brand Worthington
Model LNN Between Bearings Pump - Axially Split, Single Case
Equipment Category Between Bearings Pumps
Size Range Sizes from 125 mm (5 in) to 1200 mm (48 in)

Frequently asked questions

What is the Worthington LNN pump used for?
The Worthington LNN is a high-capacity, axially split, single-case pump designed for large water and general industrial pumping applications.
What does “axially split” mean on an LNN pump?
An axially split pump casing separates along the shaft centreline. The LNN design allows the pump to be disassembled for maintenance without disturbing the connected pipework or driver.
How does the double-volute design benefit the pump?
The double-volute design helps minimise hydraulic radial forces, reducing shaft deflection and helping extend the service life of bearings, seals and wear rings.
What flange standards are available?
The LNN is available with nozzle flanges meeting ASME B16.1, ASME B16.5 or ISO 7005 requirements, with ratings from Class 125 to Class 300 or ISO PN10 to PN63.

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