The Compact Pump
LKH-110 and LKH-120/P Multi-Stage Centrifugal Pump
Multistage pump with shroud and legs.

Application

LKH-110 and -120/P are highly efficient and economical multistage centrifugal pumps, which meet the requirements of sanitary and gentle product treatment and chemical resistance. Both the LKH-110 and the LKH-120/P are available in 3 sizes, LKH-112, - 113, -114 and LKH-122/P, -123/P, -124/P respectively, for 2, 3 and 4 stages.

Standard design

LKH-110 and -120/P consist of a motor, stub shaft with key, mechanical compression coupling, adaptor, back plate, impellers, pump casing, intermediate casing (3 or 4 stage), pump cover, impeller screw and shaft seal. The pumps are designed for CIP with emphasis on large internal roundings and cleanable seals. The sanitary versions of LKH-110 and -120/P have stainless steel shrouds for protection of the motor, and the complete unit is supported on four adjustable stainless steel legs.

Shaft seals

    The pumps can be fitted with two types of mechanical seals:

  • - Single internal seal.
  • - Flushed seal.
  • - Sic/C material combination, outlet pressure up to 20 bar
  • - Sic/Sic material combination, outlet pressure up to 40 bar

    Both seal types have stationary seal rings of silicon carbide and rotating seal rings of carbon or silicon carbide. The secondary seal of the flushed seal is a long lasting lip seal.

Materials

Product wetted steel parts: Acid-resistant steel, 1.4404 (316L) and Duplex steel
Other steel parts: Stainless steel, 1.4301 (304).
Product wetted seals: EPDM.
Other O-rings: EPDM.
Finish: Semi-bright.

Technical data

Max. outlet pressure, LKH-110/P, LKH-120/P:
- Limited by the strength of the pump casing: 4000 kPa (40 bar) temperature < 40° C.
- Limited by the strength of the pump casing: 2000 kPa (20 bar) temperature > 40° C.
Temperature range: -10°C to +140°C (EPDM).
Water pressure: Normally atmospheric, max. 1 bar (flushed seal).
Water consumption: 0.25 -0.5 l/min. (flushed seal)
Noise level (at 1 m): 60-80 dB (A).

Versions

  LKH-110 LKH-110/P LKH-120/P
Inlet pressure <10 bar >10 bar -
Motor Standard Special Special
Back Plate Standard Reinforced Standard
Shaft seal C/SIC or
SIC/SIC		 SIC/SIC SIC/SIC or
SIC/C

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 type, LKH-110:

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

Motor types, LKH-110/P and LKH-120/P:

- Special motor with special bearings.

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, LKH-110

50 Hz: 2.2, 3, 4, 5.5, 7.5, 11, 15, 18.5 kW.
60 Hz: 4.6, 6.3, 8.6, 12.5, 17, 21 kW.

Motor sizes, LKH-120/P

50 Hz: 30, 37, 45 kW.
60 Hz: 35, 43, 52, 64, 87 kW.

Options

  • - Special motor for inlet pressure higher than 10 bar (only LKH- 110).
  • - Motor for other voltage and/or frequency (only LKH-110).
  • - Motor with increased safety/flame proof motor.
  • - Flushed shaft seal.
  • - Impeller with reduced diameter.
  • - Counter flanges, seal rings and bolts for flanged connections (industrial version).
  • - Product wetted seals of Nitrile (NBR), or Fluorinated rubber (FPM).
  • - Rotating seal ring of Silicon Carbide.

Ordering

Please state the following when ordering:

LKH-110:

  • - If the inlet pressure is higher than 10 bar it is necessary to order a special version with a modified motor and a stronger backplate. Use the following designation:
    • - LKH-110: Inlet pressure (0-10 bar)
    • - LKH-110/P: Inlet pressure > 10 bar
  • - Pump size.
  • - Version, sanitary or industrial.
  • - Connections.
  • - Impeller diameter.
  • - Motor size.
  • - Voltage and frequency.
  • - Flow, pressure and temperature.
  • - Density and viscosity of the product.
  • - Options.

Note!

For further details, see also IM 70777.

Dimensions (mm)


 

LKH-112

  Motor
kW
2.2 3 4 5.5
A 109 78 81 81
B 125 140 140 178
C 173 181 188 186
E 76 76 76 76
F min. 189 185 184 184
F max. 275 295 297 317
G 242 320 320 400
H 140 140 140 140
J 140 160 190 216
K 288 323 359 383
P min. 346 353 378 376
P max. 432 463 492 509
Q 255 276 283 321
R 86 86 86 86
S 270 299 301 402
T 90 100 112 132
U 125 145 147 167
Z min. 316 321 330 347
Z max. 402 431 443 480
Weight (kg) 49 57 67 85

LKH-113

  Motor
kW
4.0 5.5/7.5 11.0
A 81 81 105
B 140 178 210
C 230 228 257
E 118 118 118
F min. 184 184 228
F max. 297 317 345
G 320 400 483
H 140 140 140
J 190 216 254
K 359 383 485
P min. 378 376 486
P max. 492 509 603
Q 325 363 410
R 86 86 86
S 301 402 493
T 112 132 160
U 147 167 195
Z min. 330 347 438
Z max. 443 480 555
Weight (kg) 72 90 134

LKH-114

  Motor
kW
5.5/7.5 11.0/15.0
A 81 105
B 178 210
C 269 298
E 159 159
F min. 184 228
F max. 317 345
G 400 483
H 140 140
J 216 254
K 383 485
P min. 376 486
P max. 509 603
Q 404 451
R 86 86
S 402 493
T 132 160
U 167 195
Z min. 347 438
Z max. 480 555
Weight (kg) 100 144/153

Dimensions (mm)


 

LKH-122/P

  Motor
kW
30/37/45
A 246
B 305
C 258
E 83
F min. 260
F max. 385
G 534
H 265
J 318
K 673
P min. 661
P max. 786
Q 411
R 113
S 700
T 200
U 220
Z min. 585
Z max. 710
Weight (kg) 370/370/390

LKH-123/P

  Motor
kW
30/37/45 55/75
A 246 389
B 305 310/349
C 316 368
E 141 141
F min. 260 401
F max. 385 462
G 534 640
H 265 265
J 318 406
K 673 753
P min. 661 811
P max. 786 872
Q 469 562
R 113 113
S 700 845/890
T 200 250
U 220  
Z min. 585 746/776
Z max. 710 807/837
Weight (kg) 387/387/407 561/576

LKH-124/P

  Motor
kW
30/37/45 55/75
A 246 389
B 305 310/349
C 372 424
E 197 197
F min. 260 401
F max. 385 462
G 534 640
H 265 265
J 318 406
K 673 753
P min. 661 811
P max. 786 872
Q 525 618
R 113 113
S 700 845/890
T 200 250
U 220  
Z min. 585 746/776
Z max. 710 807/837
Weight (kg) 404/404/424 578/593

Flow chart


 

Connections (mm)

LKH-112, -113, -114
Dl 51 ISO ISO DIN SMS BS DS
Dl l 38 Clamp Male Male Male Male Male
Ml 21 21 23 20 27 20
Mll 21 21 23 20 27 20
LKH-112/P, -113/P, -114/P
Dl 51 Heavy Duty
Dll 38 clamp
Ml   29
Mll   29
LKH-122/P, -123/P, -124/P
  Heavy duty clamp Flange acc. to DIN2635
Dl 76.5 DN80
Dll 63.8 DN65
Ml 29 56
Mll 29 56