Home > Type WN

Type WN

Qmax=250m3/h – Hmax=280m 

APPLICATION

The WN type pumps are designed to handle hot, clean and industrial water, of temperature up to 150°C. They can be applied in water supply systems, industrial cooling systems, and for the ability to pump hot water, in district heating and power plants.

DESIGN

The WN are horizontal, stationary, multistage, ring-section pumps. The delivery flange is directed vertically upward and the suction flange is directed horizontally or vertically depending on the size of pump. Closed impellers and vane diffusers are applied. The axial thrust is absorber by a balance disk. The shaft seal can be sealed by a gland or mechanical seal.

MATERIALS OF CONSTRUCTION

The casings are made of cast iron. The impellers are made of cast steel or bronze.
Special material versions can be selected for handling non-typical fluids.




No.

Part name

No.

Part name
1 Shaft 14 Impeller Sealing ring
2 Labyrinth ring 15 Stage casing
3 Bearing housing cover 16 Tie bolt
4 Bearing housing 17 Discharge casing
5 Standard roller bearing 18 Spacer sleeve
6 Thrust bearing cover 19 Split ring
7 Bearing housing adapter 20 Retaining ring
8 Mechanical seal 21 Stuffing box guard
9 Tie bolt nut 22 Angular contact ball bearing
10 Suction casing 23 Cooling chamber cover
11 Impeller Sealing ring 24 Toothed washer
12 Impeller 25 Bearing nut
13 Vane diffuser 26 Oil level control


Pump
type

Number
of stages

Dimensions [mm]

L

a

W

W1

k

H

h

Ds

Dt
6WN18 2 760 155 320 385 225 425 200 80 65
3 825 220 320 385 225
4 890 285 320 385 225
5 955 350 320 385 225
6 1020 415 320 385 225
8WN20 2 848 175 400 480 280 505 225 100 80
3 923 250 400 480 280
4 998 325 400 480 280
5 1073 400 400 480 280
10WN22 2 946 205 400 515 315 565 250 125 100
3 1036 295 400 515 315
4 1126 385 400 515 315
5 1216 475 400 515 315
6 1306 565 400 515 315
7 1396 655 400 515 315
12WN25 2 1074 230 500 605 355 635 280 150 125
3 1164 320 500 605 355
4 1254 410 500 605 355
5 1344 500 500 605 355
6 1434 590 500 605 355
12WN32 2 1110 265 500 650 400 715 315 150 125
3 1225 380 500 650 400
4 1340 495 500 650 400
5 1455 610 500 650 400
6 1570 725 500 650 400
15WN36 2 1340 315 660 755 425 780 355 200 150
3 1480 455 660 755 425
3 1620 595 660 755 425
5 1760 735 660 755 425
6 1900 875 660 755 425
7 2040 1015 660 755 425




Pump type

Number
of stages

Capacity
Q [m3/h]

Head
H [m]

Rotation speed
n [rpm]

Motor rated power
Ps [kW]

Weight
m [kg]
6WN18 2 50 76 3000 18,5 138
3 114 3000 30 157
4 152 3000 37 176
5 190 3000 45 195
6 228 3000 55 214
8WN20 2 80 96 3000 30, 37 275
3 144 3000 45, 55 302
4 192 3000 75 329
5 240 3000 75, 90 356
10WN22 2 120 120 3000 55, 75 283
3 180 3000 75, 90, 110 320
4 240 3000 90, 110, 132 357
5 300 3000 110, 132, 160 394
6 360 3000 132, 160, 200 431
7 420 3000 160, 200, 250 468
12WN25 2 90 40 1500 15, 22 460
3 60 1500 22, 30 514
4 80 1500 22, 30, 37 568
5 100 1500 30, 37, 45 622
6 120 1500 37, 45, 55 676
12WN32 2 170 60 1500 37, 55 568
3 90 1500 55, 75 622
4 120 1500 75, 90, 110 676
5 150 1500 90, 110, 132 730
6 180 1500 110, 132, 160 784
15WN36 2 250 80 1500 55, 75, 90 827
3 120 1500 75, 90, 132 960
4 160 1500 110, 132, 160 1093
5 200 1500 132, 160, 200 1226
6 240 1500 160, 200, 250 1359
7 280 1500 200, 250, 315 1492

The parameters are specified for clean water of density ρ=1000 kg/m3 and temperature T=15°C.