Reference image. Final construction follows the confirmed model and quotation.
Sewage Pumps
NL Slurry Pump
Model: NL
NL Slurry Pump is designed for municipal drainage, wastewater treatment, construction dewatering and industrial effluent. DFIN Pump provides model verification, material selection and technical support based on the actual duty point.
TECHNICAL DATA
Specifications, performance and construction
Confirm the final operating point, materials, motor and connection standard before ordering.
Product Overview
NL Slurry Pump is an industrial sewage & submersible pump selected for municipal drainage, wastewater treatment, construction dewatering and industrial effluent. The final configuration should be verified against the actual liquid, duty point, temperature, installation and power supply.
Typical Applications
Municipal drainage, wastewater treatment, construction dewatering and industrial effluent.
Design Features
- Solids-handling hydraulic passage
- Submersible or dry-installed configurations
- Automatic control options
- Model and material selection supported by DFIN Pump engineers
Technical Performance Data
| Model |
Speed n r/min |
Flow Q m3/h |
Head H m |
Efficiency n % |
Motor Power KW |
Vertical pump full length mm |
Machine pump Weight kg |
|
NL50-8 NL50A-8 |
1450 | 20-30 | -9 | 42 | 1.5 | 1310 | 63 |
|
NL50-12 NL50A-12 |
1450 | 25-38 | 12-14 | 41 | 3 | 1310 | 80 |
|
NL76-9 NL76A-9 |
1450 | 50-70 | 9-10 | 42 | 3 | 1350 | 90 |
|
NL65-16 NL65A-16 |
1450 | 50-60 | 15-18 | 42 | 5.5 | 1430 | 152 |
|
NL80-12 NL80A-12 |
1450 | 80-120 | 11-13 | 56 | 7.5 | 1430 | 145 |
|
NL100-16 NL100A-16 |
1450 | 80-100 | 15-17 | 61 | 15 | 1510 | 270 |
|
NL150-12 NL150A-12 |
1450 | 100-150 | 11-13 | 66 | 18.5 | 1690 | 350 |
|
NL150-16 NL150A-16 |
1450 | 120-180 | 15-20 | 68 | 22 | 1690 | 370 |
|
No. |
Model/part name |
NL,NLF,NW |
||
| serial number | quantity | Notes | ||
| 1 | grille | 1 | 1 |
|
| 2 | impeller nut | 2 | 1 |
|
| 3 | impeller | 3 | 1 |
|
| 4 | pump casing | 4 | 1 |
|
| 5 | pump base | 5 | 1 |
|
| 6 | 0 type ring | 6 | 1 | Improved mechanical seal |
| 7 | Oil seal | 7 | 4 | Improved mechanical seal |
| 8 | Bushing | 8 | 1 | Improved mechanical seal |
| 9 | Outlet elbow | 9 | 1 |
|
| 10 | pump shaft | 10 | 1 |
|
| 11 | Bearing | 11 | 2 |
|
| 12 | driven coupling | 12 | 1 |
|
| 13 | Active coupling | 13 | 1 |
|
| 14 | Connection barrel | 14 | 1 |
|
| 15 | Bearing seat | 15 | 2 |
|
| 16 | connecting shaft | 16 | 1 |
|
| 17 | Support tube | 17 | 2 |
|
| 18 | Bearing cap | 18 | 1 |
|
| 19 | driven coupling | 19 | 1 |
|
| 20 | Motor seat | 20 | 1 |
|
| 21 | Motor seat C | 21 | 1 | With fixing plate |
| 22 | Active coupling | 22 | 1 |
|
| 23 | electric motor | 23 | 1 |
|
| 24 | elastic block | 24 | 1 |
|
| Model length |
NL150-12
NL150A-12 NL150-16 NL150A-16 |
NL50-8
NL50A-8 NL50-12 NL50A-12 NL76-9 NL76A-9 |
NL65-16
NL165A-16 NL80-12 NL80A-12 |
NL100-16
NL100A-16 |
|
pump length L (mm)
|
650 | 470 | 710 | 710 |
| 1300 | 1120 | 1190 | 1190 | |
|
|
1620 | 1910 | 1940 | |
| / | 2120 | 2410 | 2440 | |
| / | 2620 | 3130 | 3190 | |
| / | 3120 | 3630 | 3690 | |
| / | 3620 | 4350 | 4440 | |
| / | 4120 | 4850 | 4940 | |
| / | 4620 | 5570 | 5690 | |
| / | 5120 | 6070 | 6190 | |
| / | 3620 | / | / |
| Model/code name | L | L1 | L2 | L3 | B | B1 | d | d1 | 4-d2 | 4-R | δ |
| NL25-10 | 180 | 120 | 350 | 400 | 280 | 330 | 72 | 40 | 13 | 25 | 6 |
| NL50-8 | 255 | 230 | 590 | 650 | 490 | 550 | 215 | 70 | 18 | 30 | 8 |
|
NL80-9
NL50-12 NL76-9 |
255 | 230 | 590 | 650 | 490 | 550 | 258 |
80
70 70 |
18 | 30 | 10 |
|
NL65-16
NL80-12 NL50-24 |
255 | 285 | 690 | 750 | 590 | 650 | 175 |
70
110 70 |
18 | 30 | 12 |
|
NL100-16
NL100A-16 |
380 | 350 | 920 | 1000 | 820 | 900 | 226 |
115
70 |
18 | 40 | 14 |
| Phenomenon | Causes | Troubleshooting |
|
No start move and transport change
|
1. There is a break in the feeder line.
2. Voltage is too low. 3. There is no axial clearance between the two half couplings and they are stuck. 4. The impeller is stuck by debris. 5. The impeller is in close contact with the volute. 6. The nut falls off and the flat key is damaged, causing the impeller to slip. 7. The coupling flat key is damaged. |
1. Check the blown fuse and wiring and replace them.
2. Increase the Voltage or wait until the Voltage rises before using it. 3. Adjust the axial gap between the two half couplings to 0.5 mm. 4. Remove debris. 5. Reassemble and separate the impeller and volute. 6. Install the flat key and nut. 7. Replace the flat key. |
|
overtake burden Dutch |
1. The various parts of the pump are improperly assembled, difficult to rotate, and foreign objects are stuck.
2. Changes in concentricity, bearing damage, and shaft deformation. 3. The direction of rotation is opposite. 4. Head is too low and Flow is too large. |
1. Reassemble and remove foreign objects.
2. Correct parts and replace bearings. 3. Change the Motor rotation direction. 4. Try to avoid prolonged use. |
|
flow inside No foot
|
1. The suction port is blocked, the mud pit is not deep enough, and the pump cannot suck the mud.
2. The mud pipe is blocked. 3. MotorSpeed is lower than rated Speed. 4. The impeller is damaged. 5. The head is too high and the conveyor is too far. 6. Travel in the opposite direction. 7. Large leakage.
8. There are debris around the impeller. , 9. The medium is too thick or the supply is insufficient. |
1. Remove the obstructions at the suction port and move the pump so that the volute is completely buried in the muddy manure.
2. Check the pipeline and remove the obstructions. 3. Improve MotorSpeed. 4. Replace the impeller. 5. Reduce the head and shorten the conveying distance. 6. Change the Motor rotation direction. 7. Examine the cause of the leak and replace the other items that caused the spill. 8. Remove debris. 9. Dilute the medium and increase the supply. |
|
noise Voice
and shock move |
1. Friction between impeller and volute.
2. The bearing is damaged or lacks oil. 3. The pump shaft is not concentric with the motor, and the shaft is bent. 4. The nut is loose. 5. There are debris in the volute. 6. There are hard objects in the working fluid. 7. There is air infiltration into the suction port. 8. The temperature of the pumped liquid is too high. |
1. Check the pump assembly and adjust it.
2. Replace the bearings or add oil. 3. Adjust concentricity and correct the axis. 4. Tighten the nut. 5. Remove debris. 6. Control the size of debris entering the pump and encrypt the filter screen. 7. Bury the volute deeply. 8. Reduce the liquid temperature. |
Selection Information Required
Please provide medium, concentration, flow, total head or pressure, temperature, viscosity or solids, voltage, frequency and installation method. DFIN Pump will confirm the suitable model and materials.
Catalog reference: authorized YZJ product data · Model NL
SELECTION SUPPORT
Application-based pump selection
Send the liquid, flow, head or pressure, temperature, solids, installation, power supply and destination for a verified recommendation.
Discuss this application