Alfa Laval MR

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Alfa Laval MR Liquid-Ring Centrifugal Pump for CIP Return and Low NPSH Applications
DescriptionFeaturesPump RangesHow It WorksDocumentation

Alfa Laval MR Liquid-Ring Centrifugal Pump

Alfa Laval MR

Designed to meet the hygienic requirements of the dairy, food and beverage and personal care industries, Alfa Laval MR is a liquid-ring centrifugal pump specifically engineered for pumping liquids containing air or gas.

Related Industries: Processed Foods, High-Acid Foods, Dairy, Beverages, Brewery, Home & Personal Care, Pharmaceutical, Biotech, Chemical

Models:

  • Alfa Laval LKH Standard
  • Alfa Laval LKH Prime
  • Alfa Laval LKH UltraPure
  • Alfa Laval LKH Multi-Stage
  • Alfa Laval LKH High Pressure
  • Alfa Laval LKH Evap
  • Alfa Laval LKHex
  • Alfa Laval LKHI
  • Alfa Laval LKHPF
  • Alfa Laval LKHSP

A premium performer

Part of Alfa Laval’s premium LKH range, the MR pump delivers high efficiency, reliable gas handling and low life-cycle cost.

High efficiency

Precision hydraulics and motor design maximize energy transfer while treating gas-entrained liquids gently.

Excellent gas handling

The liquid-ring principle creates a stable seal that compresses entrained air or gas, preventing cavitation and ensuring smooth operation.

Low energy consumption

Optimized impeller geometry and premium motor often achieve over 30% energy savings versus comparable mid-range pumps.

Cleanability and hygienic design

Crevice-free internals, controlled compression gaskets and an external mechanical seal ensure thorough CIP cleaning.

External shaft seal – serviceable

Front-loading seals avoid product contact and can be replaced in minutes. Interchangeable single, flushed or double seals simplify inventory.

Liquid-ring LKH models

Available in 13 sizes to handle up to 500 m³/h and inlet pressures up to 16 bar. Options include shaft seals, flushing arrangements and elastomers.

LKH UltraPure LKH UltraPure for biotech and pharmaceutical applications
LKHPF LKHPF for high-pressure applications*
LKH Multistage LKH Multistage for high outlet pressures*
LKHSP LKHSP for self-priming applications*
LKHex LKHex for explosive environments*
LKH Evap LKH Evap – dedicated evaporator pump*

Available sizes: –5, –10, –15, –20, –25, –35, –40, –45, –50, –60, –70, –80, –90

Liquid-ring principle

A rotating liquid ring forms a seal that compresses entrained gas, enabling reliable, low-NPSH operation.

External shaft seal

Front-loading seals located outside the product zone allow fast, inexpensive maintenance and resist pressure shocks.

Optimised shaft seal

One standard seal fits 11 LKH models and all SolidC pumps. Single or double flush variants swap in minutes, reducing downtime.

Compression couplings

Precision compression couplings align the stub shaft to the motor shaft, minimizing noise, vibration and bearing wear.

Handling foamy or air-filled fluids in your CIP or process system?
Contact us to select the optimal Alfa Laval MR pump for low NPSH and hygienic performance.