LKH
The Alfa Laval LKH centrifugal pump is a highly efficient, chemical-resistant pump for gentle product treatment. Advanced design with premium motor and semi-open impeller makes the transfer of process easy and minimizes recirculation. Precision-engineered, the LKH increases productivity and delivers greater energy efficiency than similar pumps. Perfect for use in hygienic applications, it meets the most stringent requirements of the dairy, food, beverage, and personal care industries.
Gentle product treatment, accurate flow control and solid energy savings
- Enhance product safety and quality with hygienic design with optimal cleanability
- Maximize uptime and minimize maintenance due to robust mechanical design and modular, easy-to-maintain front-loading seals
- Increase productivity and sustainability due to high energy efficiency and reduced use of cleaning media, minimal waste and smaller carbon footprint
- Reduce capital investment due to high pump efficiency and wide performance envelope, eliminating the need to arrange pumps in series or in parallel
- Comply with international hygienic design requirements and minimize the risk of contamination
Get high pump efficiency, gentle product treatment and substantial energy savings in hygienic applications from the premium Alfa Laval LKH centrifugal pump. Cpumps outperform similar pumps due to its robust mechanical design, wide performance envelope, long-lasting seals, and simplified maintenance routine. Compliance with international standards ensures process hygiene.
With its wide performance envelope, the LKH helps reduce capital investment. It comes in 13 sizes, handling flow rates up to 500 m3/h and differential pressures up to 11 bar (160 psi) at 50Hz. The LKH is also available in specific executions to meet special requirements, such as evaporation, high-pressure, self-priming and high-purity applications.
How does the LKH centrifugal pump work
Operating principle
The impeller of the LKH centrifugal pump is mounted on a shaft and driven by an electric motor. The shaft turns, transferring the rotational energy to the fluid passing through the pump. The centrifugal force of the fluid increases the fluid’s kinetic energy and velocity as well as the pressure in the pump. The centrifugal force then directs the fluid towards the pump outlet.
Pump range
The LKH centrifugal pump is available in 13 sizes to handle capacities up to 500 m3/hour and pressures up to 11 bar at 50 Hz. Options include different types of shaft seals and elastomer materials, casing drain, heating jacket, and various surface finishes.
External shaft seal
With the spring and washers mounted on the atmospheric side, the front-loading shaft seal contributes to fast, easy and inexpensive maintenance. It takes just a few minutes to replace the shaft seal. Its balanced design minimizes the risk of seal opening during unforeseen pressure shock.
Optimized shaft seal
One shaft seal fits a wide pump range. The same LKH single shaft seal fits most LKH pump models and all SolidC pump models. Interchanging the seal with either an optional single or double flushed shaft seal takes minutes using a few extra components, thereby reducing inventory and making wear parts replacement quick and easy.
Compression coupling
The compression coupling securely attaches the stub shaft to the motor shaft with precision alignment. Setup is simple, operations secure, noise and vibration minimized, and the service life of both the shaft seal and motor prolonged.
Unique impeller design
The centrifugal pump impellers that are semi-open with a unique multi-vane design ensures particularly low NPSHr (Net Positive Suction Head required), which helps prevent cavitation and minimizes the risk of mechanical damage. It also features balancing holes that enhance circulation around the shaft seal and reduce axial forces. This maximizes cleanability while reducing wear on the shaft seal and motor bearings.
Happy customers
View more
LKH pump outperforms the rest
Secure more uptime and energy savings with LKH pump with condition monitoring. When looking for a pump solution to handle the stringent requirements of a new cleaning-in-place (CIP) system for an ultrafiltration application, a US based food manufacturer turned to Alfa Laval. Alfa Laval LKH centrifugal pumps stood out as the clear choice based on their compact size, operational efficiency, higher flow rates and pressure capabilities, and condition monitoring capabilities.
March 15, 2023
Alfa Laval LKH pumps reduce energy costs, downtime and emissions
A major dairy in Denmark agreed to serve as a testing facility for a joint Alfa Laval-Tetra Pak pump audit. Insights from the audit revealed huge potential for savings in energy, maintenance costs and carbon emissions in their whey filtration application. Data from the actual operating performance of the two pumps purchased from another manufacturer led to replacing them with energy-efficent Alfa Laval LKH pumps. The result: 20% in energy savings, more uptime, longer service intervals, reduced emissions and a better working environment.
May 25, 2020
Close at Hand catalogue
The hygienic equipment product catalogue "Close at hand" includes product leaflets, links to animations, brochures and lists for ordering purposes.
CAD portal
The Alfa Laval CAD portal is an essential platform for downloading detailed product information, 2D drawings and 3D product models.
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. Centrifugal pumps are widely used in various industries due to their efficiency and reliability. The application of centrifugal pumps includes water supply, sewage treatment, and chemical processing.
High efficiency
A precision-engineered pump and motor provide high energy efficiency and gentle product treatment. The robust design and tight tolerances, together with the advanced impeller design, minimize recirculation and ensure efficient energy transfer.
Lower energy consumption
The LKH centrifugal pump generally delivers greater energy efficiency than similar premium pumps and up to 50% compared to similar mid-range pumps.
Hygienic design
Controlled compression gaskets, crevice-free interior, external mechanical seal, and optimized impeller with balancing holes ensure hygiene and cleanability. To safeguard hygiene further, perfectly aligned components and joints with elastomers tightened to a predefined compression minimize the elastomer product contact surfaces.
Easy maintenance
Positioning the shaft seal outside the pump eases maintenance, ensuring difficult-to-clean components do not come into direct contact with the product. The front-loading design enables quick, easy replacement, boosting uptime and reducing costs. Interchangeable single, single flushed, and double seals simplify spare parts inventory.
Warranty
Alfa Laval provides a three-year warranty for all non-wearing parts, provided genuine parts are used.
Service
Our dedicated Global Service Network supports you with parts and expertise, wherever you are, whenever you need it. By ensuring greater uptime, availability and optimization, we help bring you peace of mind, and maximize your return on investment. We can work with you to integrate our services into an Alfa Laval Service Agreement for predictable and worry-free operations.
Learn more about our service offer Troubleshooting
Serial number search Certification
Please contact us with any queries or questions.
Visit the Application & Innovation Centre
Do you want to identify the optimal equipment for the job and discover tangible savings before deciding on upgrades? In the Alfa Laval Application & Innovation Centre, you can do just that.
Optimize? by Alfa Laval
Optimize™ by Alfa Laval boosts your existing processes and enables up to 90% savings on water, energy and chemicals with only small and no-risk investments.
360° Service and maintenance videos
Alfa Laval LKH centrifugal pumps – change flushed shaft seal
Alfa Laval LKH centrifugal pumps – change single shaft seal
Alfa Laval LKH centrifugal pumps double mechanical shaft seal
Alfa Laval Service Kits
You might also be interested in...
Enhance pump uptime and efficiency with condition monitoring
Discover how Alfa Laval’s advanced condition monitoring system can optimize your pump performance and give you peace of mind. Reduce the risk of unplanned downtime and save costs with real-time monitoring and proactive maintenance.
Food Logic
Alfa Laval's hygienic equipment combines high performance with gentle handling to preserve sensitive ingredients and keep up with the food industry trends. The equipment addresses four key challenges; supplying food products to consumers at a competitive price, getting the most from raw materials, reducing waste and emissions, and delivering safe and hygienic food products.
Subscribe near Newsletter
Stay updated on important sustainability issues and opportunities in your industry and processes!
Animations
Visit the animations site and take a look inside a product to see and understand how it works.