Alfa Laval LKHex Centrifugal Pump
Applications
The LKHex pump is a highly efficient and economical centrifugal pump, which meets the requirements of the ATEX directive 94/9 IEC group II, categories 2 and 3, temperature class T3 and T4. LKHex is available in following sizes, LKHex-10, -15, -20, -25, -35, -40, -45, -50, -60, -70. The LKHex performance data are equal to the performance of LKH pump.
Standard design
The LKHex has a stainless steel shroud for protection of the motor, and the complete unit is supported on four adjustable stainless steel legs.
Shaft seals
The LKH pump is equipped with either a single shaft seal or a double mechanical shaft seal (DMS). The seal ring is in acid-resistant steel AISI 329 with sealing surface in silicon carbide and rotating seal rings in carbon or silicon carbide.
Technical Data
Materials
Product wetted steel parts: . . . . . . . . W. 1.4404 (316L).
Other steel parts: . . . . . . . . . . . . . . Stainless steel.
Finish: . . . . . . . . . . . . . . . . . . . . . Standard blasted
Product wetted seals: . . . . . . . . . . . EPDM, NBR, FPM and FEP.
Connections for DMS:
6mm tube/R 1/8″ (BSP) external thread.
Motor
Foot-flanged ATEX approved motor according to the IEC metric standard, 2 poles = 3000/3600 rpm. at 50/60 Hz.
Motor sizes
50-60 Hz: . . . . . . . . . . . . . . . . . . 1.5 – 75 kW.
Operating Data
Pressure
Max. inlet pressure:
LKHex 10-70: (50Hz) . . . . . . . . . . . . 1000kPa (10 bar).
LKHex 10-60: (60Hz) . . . . . . . . . . . . 1000kPa (10 bar).
LKHex 70: (60Hz) . . . . . . . . . . . . . . 500kPa (5 bar).
Temperature
Product temperature (T4): . . . .-10°C to +80°C (NBR).
-10°C to +110°C (EPDM, FPM, FEP).
Product temperature (T3): . . . .-10°C to +80°C (NBR).
-10°C to +110°C (EPDM).
-10°C to +140°C (FPM, FEP).
Ambient temperature: . . . . . .-10°C to +30°C
Double mechanical shaft seal (DMS):
Water pressure inlet,
LKH-10 to -70: . . . . . . . . . . .Max. 500 kPa (5 bar).
Water consumption: . . . . . . .0.25 -0.5 l/min.
Options Ordering
A. Impeller with reduced diameter.
B. Counter flanges, seal rings and bolts for flanged connections (industrial version).
C. Surface roughness, product wetted parts: Ra ≤ 0.8 µm.
D. Product wetted seals of Nitrile (NBR), Fluorinated rubber (FPM) or FEP.
E. Rotating seal ring of Silicon Carbide.
F. Impeller screw (standard for LKH-70)
G. Double mechanical shaft seal
Note! For further details, see also ESE02224.
Please state the following when ordering:
– Pump size.
– Connections.
– Impeller diameter.
– Motor size.
– Voltage and frequency.
– Flow, pressure, ambient and media temperature.
– Atmosphere ignition temperature.
– Group category and temperature class.
– Density and viscosity of the product.
– Options.
Keeping you processing
For more information about our products and services please get in touch!
JAMIE WETHERILL
Internal Sales Manager
Call: 01777 712101
Email: jamie.wetherill@moodydirect.com