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Process Pump

Process Pump
UB series
(PAT.)

Wide lineup of back-pullout type including self-priming models

Selection chart
Self-priming UB, UBC types

Model number explanation
XXXX-##@@-xP (**)

XXXX

: Pump type

##

: Suction/Discharge bore (cm)

@@

: Head classification

xP

: Electric motor pole number (2P, 4P, 6P, other)

(**)

: Electric motor output power (kW) at maximum performance (using normal water at normal temperature)

As for green-colored area in the selection chart, please select the model from UHN type.


50Hz
Self-priming Process Pump UB,UBC 50Hz

60Hz
Self-priming Process Pump UB,UBC 60Hz

Outer dimensions

UB type Self-priming Process Pump


UBC type Self-priming Process Pump

Unit: mm

Model No.
(-Poles)
Bore
Suction/
Discharge
Pump
Weight
(kg)
Motor
Base plate
Foot support
Center support
A
B
D
E
n
Frame
No.
G
J
Z-d
K
N
L
M
R
F
J
Z-d
K
N
L
M
R
F

0318-4P

40/32

435

100

160

130

100

50

90L

314

50

4-15

125

650

900

220

250

230

-150

4-19

125

850

1100

500

550

265

-2P

40/32

435

100

160

130

100

50

132S

447

50

4-19

125

750

1000

310

350

255

-125

4-19

150

900

1200

500

550

265

0323-4P

40/32

435

145

180

130

100

50

90L

314

50

4-15

125

650

900

220

250

270

-150

4-19

125

850

1100

500

550

305

-2P

40/32

435

145

180

130

100

50

132S

447

50

4-19

125

750

1000

310

350

295

-125

4-19

150

900

1200

500

550

305

0418-4P

50/40

435

110

150

130

100

55

90L

314

50

4-15

125

650

900

220

250

250

-150

4-19

125

850

1100

500

550

225

-2P

50/40

435

110

150

130

100

55

132S

447

50

4-19

125

750

1000

310

350

275

-125

4-19

150

900

1200

500

550

225

0423-4P

50/40

435

110

180

160

100

65

100L

352

50

4-19

125

750

1000

260

300

275

-75

4-19

200

900

1200

550

600

285

-2P

50/40

435

110

180

160

100

65

160L

619

75

4-19

150

900

1200

360

400

275

-75

4-23

200

1000

1400

540

600

310

0518-4P

80/50

435

110

160

135

100

75

100L

352

50

4-19

125

750

1000

260

300

265

-75

4-19

200

900

1200

550

600

275

-2P

80/50

435

110

160

135

100

75

160L

619

75

4-19

150

900

1200

360

400

265

-75

4-23

200

1000

1400

540

600

300

0523-4P

80/50

440

110

180

160

100

85

112M

376

50

4-19

125

850

1100

360

400

285

-125

4-19

150

1000

1300

550

600

295

-2P

80/50

440

110

180

160

100

85

200L

762

75

4-19

150

900

1200

360

400

285

-75

4-23

200

1000

1400

540

600

320

0818-2P

100/80

435

130

170

150

100

90

200L

762

60

4-19

150

1000

1300

400

450

295

-90

4-23

200

1000

1400

790

850

340

0823-4P

100/80

505

130

200

190

100

110

132M

485

60

4-19

150

900

1200

360

400

305

-90

4-23

200

1000

1400

790

850

340

-2P

100/80

505

130

200

190

100

110

200L

762

110

4-23

200

1000

1400

450

500

330

-40

4-23

250

1100

1600

790

850

340

0828-4P

100/80

505

140

220

210

100

130

160M

575

60

4-19

150

900

1200

360

400

325

-90

4-23

200

1000

1400

790

850

360

1034-4P

150/100

600

160

280

240

100

160

160L

684

65

4-23

200

1000

1400

450

500

390

-85

4-23

250

1100

1600

790

850

410

1040-4P

150/100

600

180

310

270

100

200

200L

762

65

4-23

200

1100

1500

400

450

400

-85

4-23

250

1200

1700

890

950

410

1523-4P

200/150

505

160

250

230

130

140

180M

646

110

4-23

200

1000

1400

450

500

360

-40

4-23

250

1100

1600

840

900

370

1528-4P

200/150

620

160

280

240

130

170

200L

762

65

4-23

200

1100

1500

400

450

370

-85

4-23

250

1200

1700

840

900

380

2534-6P

250/250

780

305

350

320

230

400

225S

782

40

6-23

150

800

1900

590

650

570

-170

6-23

150

900

2100

1140

1200

580

-4P

250/250

780

305

350

320

230

400

250M

916

40

6-23

150

900

2100

590

650

580

-170

6-23

200

950

2300

1140

1200

600

2540-6P

250/250

780

300

400

360

230

480

280M

1022

40

6-23

150

900

2100

590

650

580

-150

6-23

200

950

2300

1140

1200

600

-4P

250/250

780

300

400

360

230

480

315S

1445

10

6-23

200

900

2200

690

750

580

-150

6-23

200

1000

2400

1140

1200

600

2546-6P

250/250

850

250

380

350

180

600

315S

1445

40

6-23

200

900

2200

690

750

560

-110

6-23

200

1000

2400

1140

1200

580

-4P

250/250

850

250

380

350

180

600

400L

1580

20

6-23

200

1000

2400

740

800

610

-60

6-25

250

1050

2600

1130

1200

630

3034-4P

300/300

795

335

400

370

300

590

250M

967

70

6-23

150

900

2100

690

750

620

-

-

-

-

-

-

-

-

3040-4P

300/300

865

295

420

395

300

700

280M

1166

10

6-23

200

950

2300

840

900

670

-

-

-

-

-

-

-

-

3540-4P

350/350

918

390

430

420

300

860

280M

1166

40

6-23

200

1000

2400

840

900

670

-

-

-

-

-

-

-

-

 Note:

Flanges are manufactured according to requested specifications such as JIS 10K, JIS 20K, API, ANSI 150LB, ANSI 300LB.

Numbers with negatives in column J in this table indicate the dimensions on the left side of the center line of the casing.

Dimensions in this table are subject to change. For details on related dimensional outline drawings, please contact us.


Installation and piping


To make the best use of the features of the UB, UBC types, please follow the items below.

1.

The pump sucks water in the axial direction. Be sure to install an inverse U-bent pipe in the suction piping as shown in the figure below.

2.

The pump, being a self-priming type, does not require installation of a foot valve or an intermediate valve in ordinary operating conditions. However, if frequent operation or shorter self-priming time is desired, we recommend installing such valves. The purpose is to keep as much water as possible in the pump. The valve need not function perfectly and minor leakage will not affect performance.

3.

If a gland packing is used for shaft sealing, we recommend installation of an external flusher to prevent air from being sucked during self-priming and to maintain efficiency of the gland packing.

4.

When the pump is started up, the water inside the casing is discharged once into the discharge side before returning to the casing, and then stabilizes after recirculation begins. If the discharged water floods the check valve and the bent pipe, the amount of recirculating water becomes insufficient and self-priming efficiency decreases. Therefore, be sure to install a riser of the height shown in the figure below. For situations where the riser is too long for installation, we can provide a short discharge pipe (h2) which is made of the same material as the casing and has a special construction. Please contact us for more details.

5.

Be sure to install a check valve on the discharge side of the pump. We recommend the YOKOTA Non-Water Hammer Check Valve to prevent water hammer due to reverse flow when pump operation is stopped. Particularly with parallel operation, when one pump is stopped, it will be subject to back pressure from the other pump, causing water hammer. The YOKOTA Non-Water Hammer Check Valve can prevent water hammer even in such a situation. Further, attachment of the YOKOTA No-Feed Detector (Optional) can prevent the pump from dry operation.

6.

If the pumps are under parallel operation or if the actual pump head above the check valve exceeds more than 1/3 of the shut off head, back pressure acts on the check valve, making it difficult to exhaust air. Install an exhaust valve to relieve such a situation. In this case, install a suitable socket (refer to the table below) on the riser at the highest possible position (refer to "J" in the figure below), and then install the exhaust valve so that the opening end of its suction part is in the center of the riser bore.
There may be water leakage from the exhaust valve. To prevent air from being sucked when operation is stopped, install a pipe from the exhaust valve to a point below the water level of the suction side.
For slurry liquid pumping, please contact us.


Piping layout example 1.
Self-priming suction operation

Attach the inverse U-bent pipe to the pump.

Process Pump / Self-priming suction operation

Limit the extension of the inverse U-bent pipe (L) within 3m.

Process Pump / Self-priming suction operation


Piping layout example 2.
Sealed tank (vacuum tank) extraction operation


Piping layout example 3.
Self-priming suction operation with long horizontal pipe


Process Pump / Sealed (vacuum) tank extraction operation
                  Operation

Attach the inverse U-bent pipe.

Process Pump / Self-priming suction operation with long horizontal pipe
                  horizontal pipe


Length of riser

Process Pump / Length of riser


Length of riser

h1 >= 200 + d + 5H (Total head of pump <= 50m)

h1 >= 300 + d + 5H (Total head of pump > 50m)

Where

h1: 

Length of riser (mm)

d: 

Discharge bore (mm)

H: 

Total head of pump (m)


Example:
UBO-0523 80mm/50mm x 0.3m3/min x 22m x 1750min-1 x 3.7kW
h
1>=200+(50)+(5x22)=360
Use a riser of over 360mm length, desirably over 500mm.
For slurry liquid pumping, please contact us.

Exhaust valve

Discharge pipe bore (mm)

Valve bore

40 - 80

10A

100-150

15A

200-250

20A

300-350

32A


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