LKH Multistage centrifugal pumps are designed to suit the hygienic standards of the dairy, food and beverage, and personal care sectors, increasing process productivity while maintaining high efficiency and gentle product handling.
Related Industries
Beverage Processing, Biotechnology, Food Processing, Home Care, Personal Care
Alfa Laval LKH Multistage Application
- Available in two-, three or four-stage models.
- Replaces up to three booster pumps in a line.
- Primarily used in high-pressure applications with low capacity.
- Can withstand system pressures up to 40 bar and deliver differential pressures up to 19 bar at 50 Hz.
- Designed for Cleaning-in-Place (CIP) and suitable for various industries.
Benefits include energy efficiency, hygienic design, high inlet pressure and reduced need for serial pump installations.
TECHNICAL DATA
Materials
- Product wetted steel parts: W. 1.4404 (316L) and duplex steel
- Other steel parts: Stainless steel
- Inside surface finish: Standard blasted
- Product wetted elastomers: EPDM
- Ratary seal face: Carbon
- Stationary seal face: Silicon Carbide
Motor
Foot-flanged motor according to the IEC metric standard, 2 poles = 3000/3600 rpm at 50/60 Hz, IP 55 (with drain hole with labyrinth plug), insulation class F.
Standard motors with a fixed ball bearing on drive side are fitted to LKH-110 pumps whereas special motors with special bearings are required for LKH-110P and LKH-120P pumps.
All media contacting steel components like pump casing parts, impellers and backplate are in W. 1.4404 (AISI 316L). A stainless steel shroud protects the motor and four adjustable stainless steel legs support the complete unit. As standard, the LKH multistage pump is equipped with an internal single mechanical shaft seal but is also available with a flushed shaft seal.
The secondary seal of the flushed seal is a long-lasting lip seal. The front loading shaft seal 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.
The LKH centrifugal pumps are available in 13 sizes, capable of handling capacities up to 500 m3/hour and pressures up to 190 H/(m). They are designed for high-pressure applications, such as reverse osmosis and ultrafiltration processes, saving floor space. The pump features a unique impeller design with a semi-open impeller with a special vane, ensuring low NPSHr and reducing mechanical damage. The front-loading shaft seal is fast, easy, and inexpensive, making maintenance quick and easy.
The LKH single shaft seal fits 11 models of LKH pumps and all models of the SolidC pump, and can be interchanged in minutes with just a few extra components. The compression coupling secures the stub shaft to the motor shaft with precision alignment, minimizing noise and vibration and prolonging the service life of both shaft seal and motor.
