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Alfa Laval LKH High Pressure Centrifugal Pump
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The Rigid Pump

LKHP Centrifugal Pump for High Inlet Pressure

Application
LKHPThe LKHP pump is a highly efficient and economical centrifugal pump, specially designed for high inlet pressures, i.e. for use in filtration systems. LKHP meets the requirements of sanitary and gentle product treatment and chemical resistance, and is available in nine sizes, LKHP-10, -15, -20, -25, -35, -40, -45, -50, -60.
 
Standard Design
The LKHP pump consists of a special motor, stub shaft, compression coupling, adaptor, back plate, impeller, pump casing and shaft seal.
The LKHP pump is designed for CIP-cleaning with emphasis on large internal roundings and easily cleanable seals.
LKHP 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

LKHP can be fitted with two types of mechanical seals:

- Single internal seal.
- Flushed seal.
Both seal types have stationary seal ring and rotating seal ring in silicon carbide.

The secondary seal of the flushed seal is a lip seal with a long lifetime.
 
Materials

Product wetted steel parts: Acid-resistant steel 1.4404 (316L).
Other steel parts: Stainless steel 1.4301 (304).
Product wetted seals: EPDM rubber.
Finish: Semi bright.

Technical Data

Max. inlet pressure: 4000 kPa (40 bar).
Temperature range: -10°C to +140°C (EPDM).
Water pressure: Max. 100 kPa (1 bar).
(Flushed seal)  
Water consumption: Approx 0.25-0.5 l/min.
(Flushed seal)  
Noise level (at 1 m.): 60 - 80 dB (A).

Motor

Foot-flanged special motor with a fixed angular contact bearing according to the IEC metric standard, 2 poles = 3000/3600 rpm. at 50/60 Hz, IP 55 (with drain hole sealed with labyrinth plug), insulation class F.

Voltage and Frequency

3 ~, 50 Hz, 220-240VΔ/380 420VY ≤ 4 kW
3 ~, 60 Hz, 250-280VΔ/440-480VY ≤ 4.6 kW
   
3 ~, 50 Hz, 380-420VΔ/660-690VY ≥ 5.5 kW
3 ~, 60 Hz, 440-480VΔ ≥ 6.3 kW

Motor Sizes

50 Hz: 1.5, 2.2, 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)

The LKHP pump is a highly efficient and economical centrifugal pump, specially designed for high inlet pressures, i.e. for use in filtration systems. LKHP meets the requirements of sanitary and gentle product treatment and chemical resistance, and is available in nine sizes, LKHP-10, -15, -20, -25, -35, -40, -45, -50, -60.

Standard Design

The LKHP pump consists of a special motor, stub shaft, compression coupling, adaptor, back plate, impeller, pump casing and shaft seal.
The LKHP pump is designed for CIP-cleaning with emphasis on large internal roundings and easily cleanable seals.
LKHP 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

LKHP can be fitted with two types of mechanical seals:

- Single internal seal.
- Flushed seal.
Both seal types have stationary seal ring and rotating seal ring in silicon carbide.

The secondary seal of the flushed seal is a lip seal with a long lifetime.

 Materials

Product wetted steel parts: Acid-resistant steel 1.4404 (316L).
Other steel parts: Stainless steel 1.4301 (304).
Product wetted seals: EPDM rubber.
Finish: Semi bright.

Technical Data

Max. inlet pressure: 4000 kPa (40 bar).
Temperature range: -10°C to +140°C (EPDM).
Water pressure: Max. 100 kPa (1 bar).
(Flushed seal)  
Water consumption: Approx 0.25-0.5 l/min.
(Flushed seal)  
Noise level (at 1 m.): 60 - 80 dB (A).

Motor

Foot-flanged special motor with a fixed angular contact bearing according to the IEC metric standard, 2 poles = 3000/3600 rpm. at 50/60 Hz, IP 55 (with drain hole sealed with labyrinth plug), insulation class F.

Voltage and Frequency

3 ~, 50 Hz, 220-240VΔ/380 420VY ≤ 4 kW
3 ~, 60 Hz, 250-280VΔ/440-480VY ≤ 4.6 kW
   
3 ~, 50 Hz, 380-420VΔ/660-690VY ≥ 5.5 kW
3 ~, 60 Hz, 440-480VΔ ≥ 6.3 kW

Motor Sizes

50 Hz: 1.5, 2.2, 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)

LKHP-10, LKHP-15 and LKHP-20

  LKHP-10 LKHP-15 LKHP-20
Motor Motor Motor
kW kW kW
1.5 2.2 4 4 5.5 2.2 4 5.5/7.5
A 109 109 81 81 81 109 81 81
B 100 125 140 140 178 125 140 178
C 143 143 158 189 187 157 172 170
E 29 29 29 44 44 35 35 35
F min. 189 189 184 184 184 189 184 184
F max. 275 275 297 297 317 275 297 317
G 242 242 320 320 400 242 320 400
H 142 142 142 166 166 180 180 180
J 140 140 190 190 216 140 190 216
K 288 288 359 359 383 288 359 383
P min. 346 346 383 383 380 346 383 380
P max. 432 432 496 492 513 432 496 513
Q 226 226 253 284 322 240 267 305
R 87 87 87 66 66 88 88 88
*S 245 270 301 301 402 270 301 402
T 90 90 112 112 132 90 112 132
U 125 125 147 147 167 125 147 167
Z min. 316 316 330 330 348 316 330 348
Z max. 402 402 443 443 481 402 443 481
Weight (kg) 43 46 64 70 88 50 68 86

LKHP-25

  Motor
kW
5.5/7.5 11/15
A 81 105
B 178 210
C 174 203
E 38 38
F min. 184 228
F max. 317 345
G 400 483
H 193 193
J 216 254
K 383 485
P min. 380 490
P max. 513 607
Q 309 356
R 106 106
*S 402 493
T 132 160
U 167 195
Z min. 348 438
Z max. 481 554
Weight (kg) 92 136/145
Note! *S for pumps with ABB motors.

LKHP-35

  Motor
kW
4 5.5/7.5 11/15
A 81 81 105
B 140 178 210
C 160 158 187
E 28 28 28
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 255 293 340
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) 73 91 135/144

Dimensions (mm)

LKHP-40

  Motor
kW
7.5 11/15/18.5 22
A 81 105 156
B 178 210 241
C 169 198 211
E 33 33 33
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 304 351 364
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) 97 141/150/160 189

LKHP-50

  Motor
kW
5.5/7.5 11/15/18.5 22
A 81 105 156
B 178 210 241
C 183 212 225
E 40 40 40
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 318 365 378
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) 101 145/154/164 189
Note! *S for pumps with ABB motors.

LKHP-45

  Motor
kW
4 5.5/7.5 11/15
A 81 81 105
B 140 178 210
C 187 185 214
E 46 46 46
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 282 320 367
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) 77 95 139/148

LKHP-60

  Motor
kW
5.5/7.5 11/15/18.5 22 30
A 81 105 156 246
B 178 210 241 305
C 185 214 228 239
E 42 42 42 42
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 320 367 380 392
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) 114 158/167/177 202 347

Flow chart

Connections (mm)

LKHP-10, -20, -35
  Heavy duty clamp Flange acc. to DIN 2635
D l 63.8 DN65
D l 51.1 DN50
Ml 29 56
Mll 29 48
LKHP- 25
  Heavy duty clamp Flange acc. to DIN 2635
D l 76.5 DN80
D l 63.8 DN65
Ml 29 56
Mll 29 56
LKHP- 15, -45, -50
  Heavy duty clamp Flange acc. to DIN 2635
D l 101.9 DN100
D l 76.5 DN80
Ml 29 65
Mll 29 56
LKHP- 40
  Heavy duty clamp Flange acc. to DIN 2635
D l 76.5 DN80
D l 63.8 DN65
Ml 29 56
Mll 12 56
LKHP- 60
  Heavy duty clamp Flange acc. to DIN 2635
D l 101.9 DN100
D l 101.9 DN100
Ml 29 65
Mll 29 65

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).
 
Ordering
Please state the following when ordering:
- Pump size.
- Connections.
- Impeller diameter.
- Motor size.
- Single or flushed shaft seal.
- Optional extras.

Note!
- The curves for LKHP are the same as those for LKH.
- For further details, see also IM 70796.
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