For higher pump efficiency and big energy savings, choose the Alfa Laval LKH Prime self-priming pump. Advanced design with air-screw pump technology makes handling Cleaning-in-Place (CIP) duties containing entrained air as well as pumping process media easy. This reduces capital investment. Like the Alfa Laval LKH pump range, the LKH Prime meets the most stringent requirements in the food, dairy, beverage, home and personal care industries. An extended performance envelope adds versatility.
High pump efficiency and low noise level optimizes tank emptying and CIP return appplications
- Low process contamination risk – hygienic design, FDA-conforming materials and pre-defined compression USP class VI elastomers
- Improves yield and sustainability – use of energy and cleaning media and hydraulic design cuts energy costs and CO2/waste chemical emissions
- Maximized uptime and reduced maintenance costs – robust mechanical design and ease of maintenance with modular front-loading seals
- Reduced capital investment – designed for CIP duties containing entrained air but can also pump product, reducing need for additional pump
- Quiet operation compared to other technologies, providing a safe working environment for plant operators
Meets global standards
Quiet in operation, Alfa Laval LKH Prime is engineered to meet the most stringent standards and hygienic requirements.
Easy to maintain
The pump is easy and cost effective to service and maintain. By sharing common parts with other Alfa Laval LKH range pumps, Alfa Laval LKH Prime offers low cost of ownership and increased uptime, backed up by the security that comes from Alfa Laval’s global service network.
A trusted supplier
Alfa Laval is a leading global provider of equipment with a history of excellence dating back to 1883, and one of the world's largest hygienic pump suppliers. The Alfa Laval LKH Prime adds to a long list of high performance equipment that minimizes energy consumption.
How it works
Alfa Laval LKH Prime is a self-priming centrifugal pump based on air-screw technology. It offers excellent operational efficiency, reducing energy consumption. The pump achieves capacities of up to 110 m3/hr and pressures of up to 115 m head.
The self-priming pump shares many common components with the Alfa Laval LKH pump range including the impeller, which can be trimmed to optimize pump performance according to its application. Dedicated components include the airscrew, casing, re-circulation pipe and cover.
On applications where the pumped media contains a mixture of air and liquid in the suction line, air-screw rotation causes the formation of a continuous liquid ring within the canister.
Due to the eccentric position of the canister relative to the air-screw, an air chamber forms between the liquid ring and the air-screw, as shown, which separates into air pockets between the air-screw vanes.
The continuous rotation of the air-screw forces air pockets through the canister into the suction stage of the impeller which are then pumped out via the discharge.
Liquid is returned from the discharge via the re-circulation pipe into the canister to ensure the liquid ring is maintained at all times.
When there is no air present, the canister and recirculation loop have no function and are fully filled with liquid. The liquid passes through the canister into the suction stage of the impeller, allowing the pump to act as a traditional centrifugal pump.
Self-priming pump configuration options
- Impeller with reduced diameter
- Motor with increased safety/flame proof motor
- Double mechanical shaft seal
- Product wetted surface finish Ra ≤ 0.8 µm
- Product wetted elastomers in EPDM, nitrile (NBR) or fluorinated rubber (FPM)
- Silicon carbide rotating seal ring
- ½” tri-clamp drain connections (two connections)
360° Service and maintenance videos
Alfa Laval LKH Prime pumps – change single shaft seal
Alfa Laval LKH Prime pumps – double mechanical shaft seal
Alfa Laval Service Kits
Get more out of your pump. Go LKH Prime
Take your operations to the next level with the Alfa Laval LKH Prime self-priming pump for hygienic applications. Download the Premium goes Prime brochure.
Alfa Laval's hygienic equipment product catalogue "Close at hand" includes product leaflets, performance curves, links to animations, brochures and price lists for ordering purposes.
Ten top tips - Centrifugal pumps
Here are some tips and service videos to show how you keep your Alfa Laval LKH centrifugal pumps in tip top condition
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Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.
Visit the animations site and take a look inside a product to see and understand how it works.
Spare parts catalogue
Latest spare parts online version