The Alfa Laval LKH Centrifugal Pump is a premium pump for use in hygienic applications. To increase process productivity, it is distinguished by high efficiency, gentle product treatment, chemical resistance, and a wide range of flow rates, pressures and options. Precision-engineered, the LKH pump delivers greater energy efficiency than similar pumps. Its optimized design, premium motor, tight tolerances and advanced impeller design minimize recirculation and reduce energy consumption.
Designed for Cleaning-in-Place (CIP), the Alfa Laval LKH is ideal for hygienic applications within the dairy, food, beverage and personal care industries that require gentle product treatment and reliable operation. The LKH pump is available in 13 sizes to handle capacities up to 500 m3/hour and differential pressures up to 11 bar at 50 Hz.
Benefits
• Energyefficient: superior efficiency resulting in reduced energy consumption and CO2 footprint.
• Hygienic: designed according to the most stringent hygienic design standards and with verified, effective CIP cleanability.
• Wide performance envelope: reduce need for parallel and serial pump installations and ensure pump operating with high efficiency.
• Maximized uptime and reduced maintenance costs: robust mechanical design and ease of maintenance with modular front-loading seals.
Pump specific measures
Motor specific measures
Motor overview
Materials
- Product wetted steel parts: W. 1.4404 (316L)
- Other steel parts: Stainless steel
- Inside surface finish: Standard blasted
- Product wetted elastomers: EPDM
- Rotary 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, 4 poles = 1500/1800 rpm at 50/60 Hz, IP 55 b(with drain hole with labyrinth plug), insulation class F.
Motor sizes
- 50Hz: 0.75 - 110 kW
- 60Hz: 0.75 - 110 kW
Min/max motor speed
- 2 poles: 0.75 - 45 kW: 900 - 4000 rpm
- 2 poles: 55 - 110 kW: 900 - 3600 rpm
- 4 poles: 0.75 - 75 kW: 900 - 2200 rpm
OPERATING DATA
Max inlet pressure
- LKH-5: 600 kPa (6 bar)
- LKH-10 - 70: 1000kPa (10 bar)
- LKH-70, 60Hz: 500kPa (5 bar)
- LKH-85 - 90: 500kPa (5 bar)
Temperature
- Temperature range: -10°C to +140°C (EPDM)
- Flush media: Max 70°C
- Flush housing sterilization (pump not in operation): Max 125°C
Flushed shaft seal
- Water pressure inlet: Max. 1 bar
- Water consumption: 0.25 - 0.5 l/min
Double mechanical shaft seal
- Water pressure inlet, LKH-5 to -60: Max. 500 kPa (5 bar)
- Water pressure inlet, LKH-70 to -90: Max. 300 kPa (3 bar)
- Water consumption: 0.25 - 0.5 l/min
Connections for flushed and double mechanical shaft seal
- LKH-5 - 70, LKH-90: 1/8" G
- LKH-85: Ø6 tube
Connection
Options
A. Impeller with reduced diameter.
B. Flushed shaft seal.
C. Double mechanical shaft seal.
D. Rotating seal face of Silicon Carbide.
E. Product wetted elastomers NBR, FPM or FEP.
F. ½” vertical drain connection.
G. Product wetted surface finish mechanically polished to Ra ≤ 0.8 μm.
H. Surface finish measurement with certificate (Ra ≤ 0.8 μm).
I. Inducer (LKH-10 to -50).
J. Adjustable pads.
K. Motor for other voltage and/or frequency.
L. Half speed motor.
M. Motor with increased safety/flame proof motor.
N. ATEX approved execution (LKHex).
Ordering
Please state the following when ordering:
• Pumpsize.
• Connections.
• Impeller diameter.
• Motor size.
• Voltage and frequency.
• Flow, pressure and temperature.
• Density and viscosity of the product.
• Options.
Glyanec