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6 X 4 River Suction Sand Dredge Pump for River Sand Extraction
Naipu® NP-G
series of Dredge and Gravel pumps is designed specifically for continuous pumping of extremely aggressive slurries, feature larger impellers and heavier casing construction, with a wide particle size distribution. Capable of handling large particles at consistently high efficiencies results in low cost of ownership. The large volume internal profile of the casing reduces associated velocities further increasing component life. Sizes range from 100mm up to 600mm.
Slurry Pump Parts
Casing, shaft, throat bush, wear plate, case, cover, stuffing box, lantern restrictor, cover plate bolt, volute, throat bush, shaft sleeve, cover plate liner, frame plate liner




G sand pump selection chart
( Note: Approximate performance for clear water,to be used for primary selection only.)

Pump performance parameters
Model | Flow (m3/h) | Head (m) | Speed (r/min) | Efficiency (%) | Motor (kw) | Drive type
| |
6X4 D-G | 187-36 | 7-51 | 1400-600 | 30-58 | 52-3 | CV.CR.DC | -Slag Granulation |
8X6 E-G | 576-133 | 10-48 | 1400-800 | 60-54 | 88-11 | CV.CR.DC | -Suction Hopper Dredging |
10X8 F-G | 930-216 | 11-44 | 940-500 | 65-34 | 147-22 | CR.DC | -Sand Reclamation |
12X10 G-G | 1512-360 | 11-58 | 850-400 | 70-50 | 305-24 | CR.DC | -Barge Loading |
14X12 G-G | 3168-522 | 9.5-66 | 700-300 | 68-60 | 643-29 | CR.DC | -Sand Reclamation |
16X14 TU-G | 3024-900 | 14-45 | 500-300 | 70-50 | 459-78 | CR.DC | -Sugar Beet |
8X6 F-GH | 648-126 | 15-77 | 1050-500 | 71-50 | 177-12 | CR.DC | -Dredging |
10X8 F-GH | 1091-324 | 19.2-56.5 | 800-500 | 72-60 | 205-32.4 | CR.DC | -Constructional Material |
12X10 G-GH | 2232-612 | 28-77 | 700-450 | 73-60 | 558-89 | CR.DC | -Sand gravel processing |
16X14 TU-GH | 3450-1000 | 72-25 | 500-300 | 78-65 | 2-8 | CR.DC | |
18X16 TU-G | 3600-1050 | 42-12 | 250-450 | 60-72 | 2-8 | CR.DC | |
18X16 TU-GH | 4300-1350 | 70-18 | 250-500 | 60-70 | 2.5-8 | CR.DC |


1. Sand pump construction drawing

2. Main part number at the drawing
| 003: Base 005: Bearing Assembly 132: Intake Joint Discharge Joint 130: Discharge Flange Intake Flange 013: Cover Plate | 131: Bowl 137: Impeller 041: Back Liner 135: Door Clamp Ring 134: Adapter Plate Clamp Ring 124: Volute Cover Seal |
3. Materials of construction
| VOLUTE | IMPELLERS | BASE | EXPELLER | EXPELLER RING | SHAFT SLEEVE | SEALS | |
| Standard | High Chrome Alloy | High Chrome Alloy | Cast Iron | High Chrome Alloy or SG Iron | High Chrome Alloy or SG Iron | SG Iron | Natural Rubber |
| Options | SG Iron | SG Iron | Mild Steel Fabricated | SG Iron | SG Iron | EN56C Ferralium Hasteloy C Ceramic Stellite Chrome Oxide | Nordel Neoprene Viton Butyl EPDM |
Naipu pump produce many kinds of centrifugal slurry pump for mining, sand and other solids slurry transporting.
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| Rubber Liner Slurry Pump for Mining | HH High Head Slurry Pump for Tailings |
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| Vertical slurry pump for drain | Expeller seal type pump parts |
What service of Shijiazhuang Naipu?
| OEM service | Produce the pump and spare parts according to client's drawing or sample. |
| Pump slection | Help customers select the type, size and operating speed of pumps that will perform at the lowest cost. |
| Using service | Offer Design, Installation, Repair and Maintenance solutions and Mine measuring up service. |
| Quality control | Pay more attention to the quality in every process with different instruments. |
| Material service | Interchangeable metal design allow best material choice for any application. |
| After-sales service | Provide lifetime after sale service to solve any question during uses and large stock for standard spare parts. |
| Guarantee | One year guarantee for whole machine except of the wet end parts. |
CE, SGS, ISO9001 Certification

NaiPu Main Pump Model
AH(R) | L(R), M | HH | SP(R) | G | AF Series |
1.5/1B-AH(R) | 20A-L | 1.5/1 C-HH | 40PV-SP(R) | 6/4D-G | 2QV-AF |
2/1.5B-AH(R) | 50B-L(R) | 3/2D-HH | 65QV-SP(R) | 8/6E-G | 3QV-AF |
3/2C-AH(R) | 75C-L | 4/3E-HH | 100RV-SP(R) | 10/8F-G | 6SV-AF |
4/3C-AH(R) | 100 D-L | 4/3X-HH | 150SV-SP(R) | 10/8S-G | 8SV-AF |
6/4D-AH(R) | 150E-L | 6/4F-HH | 200SV-SP | 12/10G-G |
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6/4E-AH(R) | 300S-L | 6/4X-HH | 250TV-SP | 14/12G-G |
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8/6E-AH(R) | 10/8 R-M | 6S-H |
| 14/12T-G |
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8/6R-AH(R) | 10/8 E-M | 8/6S-H |
| 16/14 G-G |
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10/8F-AH(R) |
| 8/6X-H |
| 16/14TU-GH |
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10/8X-AH(R) |
| 6S-HP |
| 16/14H-GH |
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12/10ST-AH(R) |
| 8/6S-HP |
| 18/16G-G |
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14/12ST-AH(R) |
| 8/6X-HP |
| 18/16TU-GH |
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16/14TU-AH(R) |
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20/18G(TU)-AH(R) |
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Katherine Hou

Shijiazhuang Naipu Pump Co., Ltd is a professional manufacturing enterprise of slurry pumps and spare parts. Which own Mould Workshop, Casting Workshp, Machining Workshop and Assembly Workshop.

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