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LKH

Designed to meet the hygienic requirements of the dairy, food and beverage and personal care industries, LKH centrifugal pumps increase process productivity while providing high efficiency and gentle product handling.

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A premium performer

As Alfa Laval’s premium range of centrifugal pumps, the LKH centrifugal pumps are distinguished by high efficiency, low energy consumption, several options, and a wide range of flow rates and pressures.

High efficiency

A precision-engineered pump and motor provide high efficiency and gentle product treatment. The robust design and tight tolerances together with the advanced impeller design minimize recirculation and ensure the efficient transfer of energy.

Optimal pump design

The impeller design ensures efficient and gentle handling of the product as it moves through the pump. This ensures product integrity and minimizes NPSHr ( Net Positive Suction Head required).

Low energy consumption

Making pump energy use more efficient presents huge potential for energy savings. The optimized pump design and premium motor of Alfa Laval LKH centrifugal pumps often deliver greater energy efficiency than similar premium pumps and up to 50% compared to similar mid-range pumps.

Cleanability and hygienic design

The key is the attention to detail. Controlled compression gaskets, crevice free internals, an external mechanical seal, and an optimised impeller with balancing holes all ensure that the pump is truly cleaned during a time effective CIP cycle. Perfectly aligned components and joints with O-rings tightened to a predefined compression minimize the elastomer product contact surfaces, which also safeguards hygiene.

External shaft seal – hygienic and serviceable

By positioning the shaft seal outside the pump, difficult-to-clean components do not come into direct contact with the product. In addition, the front-loading design enables quick and easy replacement, providing more uptime with lower maintenance costs. Interchangeable single, flushed and double seals simplify spare parts inventory.

 LKH

 

Warranty

Alfa Laval provides a three-year warranty for all non-wearing parts, provided genuine parts are used.

  • High efficiency
  • Hygienic design
  • Low energy consumption

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Different models for different applications

Several different LKH pump models are available to meet the requirements of different applications:

LKH Evap

LKH UltraPure for biotech and pharmaceutical applications

 

LKHPF for high-pressure applications*

 

LKHSP

LKH Multistage for high outlet pressures*

 

LKH Multistage

LKHSP for self-priming applications*

 

LKHPF

LKHex for applications in explosive environments*

 

LKH UltraPure

LKH Evap a dedicated evaporator pump*

 

*To learn more about the different models, go to “How it works”.

 

  • Documents
  • Related industries

Performance curves

Performance Curves - LKH- LKHPF- LKHI- LKH Evap-45 60 Hz - EN.pdf 2015-56-24 210 kB
Performance Curves - LKH-110 Multi-Stage 50 Hz 60 Hz - EN.pdf 2015-01-24 199 kB
Performance Curves - LKH-5 60 Hz - EN.pdf 2015-04-24 199 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-40 50 Hz - EN.pdf 2015-55-24 210 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-50 50 Hz - EN.pdf 2015-58-24 210 kB
Performance Curves - LKH-120 P Multi-Stage 50 60 Hz - EN.pdf 2015-02-24 210 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-20 50 Hz - EN.pdf 2015-48-24 210 kB
Performance Curves - LKH- LKHPF- LKHI - LKH Evap-10 60 Hz - EN.pdf 2015-46-24 204 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-35 60 Hz - EN.pdf 2015-53-24 212 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-35 50 Hz - EN.pdf 2015-54-24 210 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-45 50 Hz - EN.pdf 2015-57-24 210 kB
Performance Curves - LKH- LKHI- LKH Evap-15 60 Hz - EN.pdf 2015-19-24 207 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-60 50 Hz - EN.pdf 2015-00-24 214 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-25 60 Hz - EN.pdf 2015-52-24 216 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-10 50 Hz - EN.pdf 2015-48-24 204 kB
Performance Curves - LKH- LKHI- LKH Evap-15 50 Hz - EN.pdf 2015-18-24 199 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-50 60 Hz - EN.pdf 2015-59-24 212 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-60 60 Hz - EN.pdf 2015-01-24 216 kB
Performance Curves - LKH-85, 50 Hz 60 Hz - EN.pdf 2015-17-24 202 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-25 50 Hz - EN.pdf 2015-51-24 214 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-40 60 Hz - EN.pdf 2015-56-24 218 kB
Performance Curves - LKH- LKHPF- LKHI- LKH Evap-20 60 Hz - EN.pdf 2015-49-24 218 kB
Performance Curves - LKH- LKHPF- LKH Evap-70 60 Hz - EN.pdf 2015-44-24 222 kB
Performance Curves - LKH- LKHP- LKHI- LKH Evap -15 50 Hz - EN.pdf 2015-41-24 73 kB
Performance Curves - LKH- LKHPF- LKH Evap-70 50 Hz - EN.pdf 2015-43-24 222 kB

How it works

Pump range

LKH centrifugal pumps are currently available in 13 sizes to handle capacities up to 500 m3/hour and pressures up to 190 H/(m). Options include types of shaft seals, flushing arrangements and elastomers.

LKH pump curves

 LKH pump range, composite curve

Unique impeller design

The semi-open impeller with a special vane design ensures particularly low NPSHr (Net Positive Suction Head required). This helps prevent cavitation and minimizes the risk of mechanical damage.

Balance holes in the impeller enhance circulation around the shaft seal and reduce axial forces. This minimizes wear on the shaft seal and motor bearings.

External shaft seal

The front-loading shaft seal, with the spring and washers mounted on the atmospheric side, makes maintenance fast, easy and inexpensive. It takes just a few minutes to replace the shaft seal. In addition, the balanced design minimizes the risk of seal opening during unforeseen pressure shock.

Optimised shaft seal

One shaft seal fits a wide pump range. The exact same LKH single shaft seal fits 11 models of LKH pumps as well as all models of the SolidC pump. The LKH seal also has the option of single or double flushed, which can be interchanged in minutes with just a few extra components.

This standardization reduces inventory and makes wear parts replacement quick and easy. 

Compression couplings

Another notable feature is the compression coupling. This securely attaches the stub shaft to the motor shaft with precision alignment. Setup is simple, operations secure and noise and vibration minimized. What’s more, the coupling helps prolong the service life of both shaft seal and motor.

Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.

 View CAD portal 

Visit the animations site and take a look inside a product to see and understand how it works. 

View animations 

To keep you updated on important sustainability issues and opportunities in your industry and processes.

Learn more

Part of a broad range of hygienic pumps

Alfa Laval offers a comprehensive range of pumps for use in hygienic applications. These include:

  • SolidC (Standard centrifugal pump)
  • MR (Liquid ring and CIP return pump)
  • SRU (Premium tri-lobe rotary lobe pump)          
  • SX (Multi-lobe rotary lobe pump) 
  • OptiLobe (Standard tri-lobe rotary pump)          
  • SCPP (Circumferential piston pump)

For the biotech and pharmaceutical industry:

  • LKH UltraPure (Premium centrifugal pump)        
  • SolidC UltraPure (Standard centrifugal pump) 
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