Alfa Laval LKH - Technical data

6 Technical data
It is important to observe the technical data during installation, operation and maintenance.
Inform personnel about the technical data.
6.1 Technical data
The LKH pump is a highly efficient and econominal centrifugal pump, which meets the requirements of sanitary and gentle
product treatment and chemical resistsnce. LKH is available in the following sizes LKH-5, -10, -15, -20, -25, -35, -40, -50, -60,
-70, -75, -85 and -90. The instruction manual is part of the delivery. Read the instructions carefully. The large pump sizes are
very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
D
D
a
a
t
t
a
a
Max. inlet pressure *
LKH-5 : 600 kPa
(6 bar) (87 psi )
LKH-10 to -70 (50 Hz):
1000 kPa
(10 bar) (145 psi )
LKH-85 and LKH-90 (50 Hz):
500 kPa
(5 bar) (72.5 psi)
LKH-10 to -60 (60 Hz):
1000 kPa
(10 bar) (145 psi )
LKH-70, LKH-75, LKH-85, LKH-90 (60 Hz):
500 kPa
(5 bar) (72.5 psi )
Temperature range
-10
o
C to +140
o
C (EPD M) (14 to 284
o
F)
Max. 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
Maximum product viscosity: 800 cP
M
M
a
a
t
t
e
e
r
r
i
i
a
a
l
l
s
s
Product wetted steel parts
AISI 316L
Other steel parts
Stainless steel
Product wetted seals
EPDM (standard)
Other O-rings
EPDM (standard)
Alternative seals
Nitrile (NBR), fluorinated rubber (FPM) and FEP
S
S
h
h
a
a
f
f
t
t
s
s
e
e
a
a
l
l
Seal types
External single, flushed or double mechanical seal
Max. temperature flush media
70
o
C N
N
O
O
T
T
E
E
:
:
When the pump is not in operation t
he flush housing can be
sterialilzed up to 125
o
C
Max. water pressure (flushed seal) Normally atmospheric (max. 1 bar) (max. 14.5 psi)
Water consumption (flushed seal)
0.25 - 0.5 l/min. (0.07-0.13 gl)
Max. water pressure LKH-5 to -60 (DMS) Normally atmospheric (max. 5 bar) (max. 72.5 psi)
Max. water pressure LKH-70 to -90 (DMS) Normally atmospheric (max. 3 bar) (max. 43.5 psi)
Water consumption (double mechanical seal)
0.25-0.5 l/min. (0.07-0.13 gl )
Material, stationary seal ring Acid-resistant steel with sealing surface of silicon carbide
Material, rotating seal ring
Carbon (standard) or silicon carbide
Material, O-rings
EPDM (standard)
Alternative material, O-rings
Nitrile (NBR), fluorinated rubber (FPM) and FEP
M
M
o
o
t
t
o
o
r
r
Foot-flanged motor according to IEC metric standard, 2 poles = 3000/3600 rpm. at 50/60 Hz IP55, insulation class F
Motor sizes (kW), 50 Hz
0.75 - 110 kW
Motor sizes (kW), 60 Hz
0.9 - 110 kW
Motor sizes (Hp), 60 Hz
1.5-150Hp
For further information, see PD sheet.
* Max 5 bar (72psi) inlet pressure allowed if the pump is mounted on an explosion proof motor Exd or Exde, type WEG W21.
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