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Alfa Laval LKHI Centrifugal Pump
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The Premium Pump for Higher Pressure

LKHI Centrifugal Pump for 16 bar Inlet Pressure

Application
LKHIThe LKHI pump is a highly efficient and economical centrifugal pump, specially designed for inlet pressures up to 16 bar. LKHI meets the requirements of sanitary and gentle product treatment and chemical resistance, and is available in nine sizes, LKHI-10, -15, -20, -25, -35, -40, -45, -50, -60.

Standard Design

The LKHI pump consists of a special motor, stub shaft, compression coupling, adaptor, back plate, impeller, pump casing and shaft seal.
The LKHI pump is designed for CIP-cleaning with emphasis on large internal roundings and easily cleanable seals. LKHI is a sanitary pump with a stainless steel shroud for protection of the motor. The complete unit is supported on four adjustable stainless steel legs.

Shaft seals

LKHI can be fitted with two types of mechanical seals:

- Single internal seal.
- Flushed seal.
Both seal types have stationary seal rings of silicon carbide and rotating seal rings of carbon or silicon carbide:

1. Silicon carbide/carbon for inlet pressure up to 10 bar.
2. Silicon carbide/silicon carbide for inlet pressure higher than 10 bar.
The secondary seal of the flushed seal is a long lasting lip seal.
 
Materials
Product wetted steel parts: Acid-resistant steel, 1.4404 (316L).
Other steel parts: Stainless steel, 1.4301 (304).
Product wetted seals: EPDM.
Other O-rings: EPDM.
Finish: Semi-bright.

Technical data

Max. inlet pressure: 1600 kPa (16 bar).
Temperature range: -10°C to +140°C (EPDM).
Water pressure: Normally atmospheric.
(max. 1 bar).
Water consumption: 0.25 -0.5 l/min.
(Flushed seal)
Noise level (at 1 m): 60 - 80 dB (A).

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.

Motor types:

- Standard motor with a fixed ball bearing on drive side.
- Special motor with a fixed angular-contact ball bearing on drive side.

Note! The special motor must be ordered for inlet pressure >10 bar.
Motor sizes
Inlet pressure (bar)
(kW)
0-10
>10
1.5 - 30 (50 Hz)
Standard motor
Special motor
1.75 - 35 (60 Hz)
 
Voltage and frequency
3 ~, 50 Hz, 220-240V Δ/380-420VY ≤ 4 kW
3 ~, 60 Hz, 250-280V Δ/440-480VY ≤ 4.6 kW
3 ~, 50 Hz, 380-420V Δ/660-690VY ≥ 5.5 kW
3 ~, 60 Hz, 440-480V Δ ≥ 6.3 kW
 
Motor sizes
50 Hz: 1.5, 2.2, 3.0, 4.0, 5.5, 7.5, 11.0, 15.0, 18.5, 22.0, 30.0 kW.
60 Hz: 1.75, 2.5, 4.6, 6.3, 8.6, 12.5, 17.0, 21.0, 25.0, 35.0 kW
 
Dimensions (mm)

LKHI-10

Motor
kW
1.5 2.2 3 4
A 109 109 78 81
B 100 125 140 140
C 132 132 140 147
E 23 23 23 23
F min. 189 189 185 184
F max. 275 275 295 297
G 242 242 320 320
H 142 142 142 142
J 140 140 160 190
K 288 288 323 359
P min. 346 346 357 383
P max. 432 432 467 496
Q 215 215 235 242
R 87 87 87 87
*S 245 270 299 301
T 90 90 100 112
U 125 125 145 147
Z min. 316 316 321 330
Z max. 402 402 431 443
Weight (kg) 36 39 47 57

LKHI-20

Motor
kW
2.2 3 4 5.5 / 7.5
A 109 78 81 81
B 125 140 140 178
C 145 152 159 157
E 27 27 27 27
F min. 189 185 184 184
F max. 275 295 297 317
G 242 320 320 400
H 180 180 180 180
J 140 160 190 216
K 288 323 359 383
P min. 346 357 383 380
P max. 432 467 496 513
Q 227 247 254 292
R 88 88 88 88
*S 270 299 301 402
T 90 100 112 132
U 125 145 147 167
Z min. 316 321 330 348
Z max. 402 431 443 481
Weight (kg) 41 49 59 77
 Note! *S for pumps with ABB motors.

LKHI-15

Motor
kW
3 4 5.5
A 78 81 81
B 140 140 178
C 176 183 181
E 43 43 43
F min. 185 184 184
F max. 295 297 317
G 320 320 400
H 166 166 166
J 160 190 216
K 323 359 383
P min. 357 383 380
P max. 467 492 513
Q 271 278 316
R 66 66 66
*S 299 301 402
T 100 112 132
U 145 147 167
Z min. 321 330 348
Z max. 431 443 481
Weight (kg) 51 61 79

LKHI-25

Motor
kW
5.5/7.5 11/15
A 81 105
B 178 210
C 168 197
E 32 32
F min. 184 228
F max. 317 345
G 400 483
H 193 193
J 216 254
K 383 485
P min. 380 486
P max. 513 607
Q 303 350
R 106 106
*S 402 493
T 132 160
U 167 195
Z min . 348 438
Z max. 481 554
Weight (kg) 84 128/137

Dimensions (mm)

LKHI-35

Motor
kW
4 5.5/7.5 11/15
A 81 81 105
B 140 178 210
C 155 153 182
E 23 23 23
F min. 184 184 228
F max. 297 317 345
G 320 400 483
H 193 193 193
J 190 216 254
K 359 383 485
P min. 383 380 490
P max. 496 513 607
Q 250 288 335
R 119 119 119
*S 301 402 493
T 112 132 160
U 147 167 195
Z min. 330 348 438
Z max. 443 481 554
Weight (kg) 66 84 128/137

LKHI-45

Motor
kW
4 5.5/7.5 11/15
A 81 81 105
B 140 178 210
C 184 182 211
E 41 41 41
F min. 184 184 228
F max. 297 317 345
G 320 400 483
H 193 193 193
J 190 216 254
K 359 383 485
P min. 383 380 490
P max. 496 513 607
Q 279 317 364
R 97 97 97
*S 301 402 493
T 112 132 160
U 147 167 195
Z min. 330 347 438
Z max. 443 480 555
Weight (kg) 68 86 130/139
 Note! *S for pumps with ABB motors.

LKHI-40

Motor
kW
7.5 11/15/18.5 22
A 81 105 156
B 178 210 241
C 163 192 206
E 28 28 28
F min. 184 228 260
F max. 317 345 365
G 400 483 508
H 212 212 212
J 216 254 279
K 383 485 533
P min. 380 490 546
P max. 513 607 671
Q 298 345 358
R 126 126 126
*S 402 493 570
T 132 160 180
U 167 195 215
Z min. 348 438 484
Z max. 481 554 589
Weight (kg) 87 131/140/150 177

LKHI-50

Motor
kW
5.5/7.5 11/15/18.5 22
A 81 105 156
B 178 210 241
C 176 205 218
E 35 35 35
F min. 184 228 260
F max. 317 345 365
G 400 483 508
H 205 205 205
J 216 254 279
K 383 485 534
P min. 380 490 546
P max. 513 607 671
Q 311 358 371
R 118 118 118
*S 402 493 570
T 132 160 180
U 167 195 215
Z min. 348 438 484
Z max. 481 554 589
Weight (kg) 86 133/142/152 177

Dimensions (mm)

LKHI-60

Motor
kW
5.5/7.5 11/15/18.5 22 30
A 81 105 156 246
B 178 210 241 305
C DN150 255 284 297 309
C 4" 205 234 247 259
C clamp 6" 245 274 287 299
E DN150 112 112 112 112
E 4" 62 62 62 62
E clamp 6" 102 102 102 102
F min. 184 228 260 260
F max. 317 345 365 385
G 400 483 508 534
H 262 262 262 262
J 216 254 279 318
K 383 485 534 673
P min. 380 490 546 661
P max. 513 607 671 786
Q DN150 390 437 450 462
Q 4" 340 387 400 412
Q clamp 6" 380 427 440 452
R 102 102 102 102
*S 402 493 570 700
T 132 160 180 200
U 167 195 215 220
Z min. 348 437 484 585
Z max. 481 554 589 710
Weight (kg) 97 141/150/160 185 330
 Note! *S for pumps with ABB motors.

Volumetric flow

Connections (mm)

LKHI-10, -20, -35
Dl 63.5 ISO ISO DIN SMS BS
Dll 51 Clamp Male Male Male Male
Ml 21 21 25 24 22
Mll 21 21 22 20 22
LKHI-25
Dl 76.1 ISO ISO DIN SMS BS
Dll 63.5 Clamp Male Male Male Male
Ml 21 21 30 24 22
Mll 21 21 25 24 22
LKHI-40
Dl 76.1
ISO
ISO
DIN
SMS
BS
Dll 63.5
Clamp
Male
Male
Male
Male
Ml
21
21
30
24
22
Mll
12
21
27
24
17
 
Options
- Impeller with reduced diameter.
- Impeller screw.
- Motor for other voltage and/or frequency.
- 1500 rpm. motor.
- Motor with increased safety/flame proof motor.
- Flushed shaft seal.
- Seals in Nitrile (NBR) or Fluorinated rubber (FPM).
- Surface roughness, product wetted parts: Ra ≤ 0.8 µm.
- Product wetted seals of Nitrile (NBR) or Fluorinated rubber (FPM).
- Seal faces in SIC/SIC (Silicon Carbide).
LKHI-15, -45, -50
Dl 101.6 ISO ISO DIN SMS BS
Dll 76.1 Clamp Male Male Male Male
Ml 21 21 30 35 27
Mll 21 21 30 24 22
LKHI-60
Dl 101.6 ISO ISO DIN SMS BS
Dll 101.6 Clamp Male Male Male Male
Ml 21 21 30 35 27
Mll 21 21 30 35 27
 
Dl DN150
DIN
Dl 6"
ISO
Dll DN100
Male
Dll 4"
Clamp
Ml
50
Ml
38
Mll
30
M ll
16
 
Ordering
Please state the following when ordering:
- Pump size.
- Pressure.
- Connections
- Impeller diameter.
- Motor size.
- Single or flushed shaft seal.
- Optional extras.

Note!
- The curves for LKHI are the same as those for LKH.
- For further details, see also Instruction Manual, IM 70820.
 
 
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