The LW446 mud pump is a horizontal, three-cylinder, reciprocating, single-acting piston pump designed for heavy-duty applications in oilfield operations, foundation treatment, and other high-pressure tasks. Below is a detailed summary of its features, technical specifications, and performance parameters:
Key Features of LW446 Mud Pump
- Design: Horizontal, three-cylinder, reciprocating, single-acting piston pump.
- Power End: Integrated rolling bearing type transmission, offering high power, low noise, and environmental protection.
- Seal Life: Enhanced seal life by 60%.
- Durability: Capable of continuous 24-hour operation at low temperatures.
- Maintenance: Easy to maintain with a compact structure and lightweight design.
- Applications: Suitable for high-pressure rotary jet grouting, curtain grouting, soil retaining cofferdams, mine well plugging, slope anchorage, and more.
I. Technical Specifications
| Rated Input Power | 328 KW (440 HP) |
| Rated Stroke | 300 SPM (LW446) |
| Stroke Length | 152.4 mm (6″) |
| Gear Ratio | 4.578 : 1 |
| Max. Operation Pressure | 35 MPa (LW446) |
| Valve Chamber Valve-Over | API 4# |
| Max. Liner Diameter | 6″ (LW446) |
| Max. Liner Mud Pressure | 16.9 MPa (at 160 SPM) |
| Suction Manifold Diameter | 6″ (150 # Flange) |
| Discharge Manifold Diameter | 3″ (900 # Flange) |
| Pinion Shaft Diameter | 95.25 mm (3.75″) |
| Pinion Key Dimensions | 22.174 × 15.9 mm |
| Dimensions (Excluding Base) | 2479 × 1219 × 1103 mm |
| Weight | 4463 Kg |
II. Structural Characteristics
- Compact Design: Small volume, lightweight, and easy to transport.
- Gear Pair: Integrated herringbone gear pair for large transmit torque and smooth operation.
- Crankshaft: Welded forged crankshaft for reduced vibration and lightweight performance.
- Versatility: Suitable for both workover operations and high-pressure drilling operations.
- Piston Structure: liner sizes from 3¼” to 6″.
- Plunger Structure: liner sizes from 2″ to 3¼” for high-pressure tasks.
III. Performance Parameters
| LW-446 Parameter | Stroke/Min. | 300 | 250 | 200 | 150 | 100 | 50 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated Input (HP) | 440 (328) |
367 (273) |
293 (219) |
220 (164) |
147 (109) |
73 (55) |
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| Liner Dia. （in） |
Pressure | Gallon/Turn | Liter/Turn | Gallon/min | Liter/min | Gallon/min | Liter/min | >Gallon/min | Liter/min | Gallon/min | Liter/min | >Gallon/min | Liter/min | Gallon/min | Liter/min | |
| PSI | Kg/cm2 | |||||||||||||||
| 6” | 1027 | 72.2 | 2.203 | 8.339 | 661 | 2502 | 551 | 2085 | 441 | 1668 | 330 | 1251 | 220 | 834 | 110 | 417 |
| 5-1/2” | 1222 | 85.9 | 1.851 | 7.007 | 555 | 2102 | 463 | 1752 | 370 | 1402 | 278 | 1051 | 185 | 701 | 93 | 350 |
| 5” | 1479 | 104.0 | 1.53 | 5.791 | 459 | 1737 | 382 | 1448 | 306 | 1158 | 229 | 869 | 153 | 579 | 76 | 290 |
| 4-1/2” | 1826 | 128.4 | 1.239 | 4.691 | 372 | 1407 | 310 | 1173 | 248 | 938 | 186 | 704 | 124 | 469 | 62 | 235 |
| 4” | 2311 | 162.4 | 0.979 | 3.706 | 294 | 1112 | 245 | 927 | 196 | 741 | 147 | 556 | 98 | 371 | 49 | 185 |
| 3-1/2” | 3000 | 210.9 | 0.750 | 2.838 | 225 | 851 | 187 | 709 | 150 | 568 | 112 | 426 | 75 | 284 | 37 | 142 |
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I. LW440 Mud Pump Technical Specification
Rated input power |
328KW (440HP) |
Rated Stroke |
320冲/分（320SPM）（LW440） |
Stroke |
152.4mm （6″） |
Gear Ratio |
4.578 ：1 |
Max. operation pressure |
35 Mpa (LW440) |
Valve chamber Valve-Over |
API 4# |
Max. liner dia. |
4-1/2″ (LW440) |
Max. liner mud pressure |
(160冲/分) 16.9 Mpa |
Dia. of suction manifold 6″ |
(150 #) Flange |
Dia. of discharge manifold 3″ |
(900 #) Flange |
Dia. pinion Shaft |
95.25mm （3.75″） |
Dia. pinion Key |
22.174×15.9 mm |
Dimension：（No included base） |
2479×1219×1103 mm |
Weight |
4463 Kg |
II. Tructure Character
The pump is compact structure, small volume, lightweight, integrated herringbone gear pair, large transmit torque and smooth run. Crankshaft is welding forged and light weight without libration.
LW440 Mud Pump Single-acting Triplex Pump can be used widely in oilfield operation. Liner size from 3-1/4″—4-1/2″ is better-adopted piston structure for workover operation and low well drilling operation while plunger structure for liner size from 2—31/4″ for high- pressure operation.
III. Performance Parameter Table
LW-440 MUD PUMP |
(stroke/Min.) |
170 |
120 |
70 |
||||||
Rated Input (HP) |
260 |
200 |
200 |
|||||||
Liner Dia.（in） |
Pressure |
Gallon/Turn |
Liter/Turn |
G/m |
L/m |
G/m |
L/m |
G/m |
L/m |
|
psi |
Mpa |
|||||||||
41/2 |
1710 |
11.793 |
1.239 |
4.690 |
211 |
799 |
149 |
564 |
87 |
329 |
4 |
2169 |
14.959 |
0.979 |
3.706 |
167 |
633 |
118 |
447 |
69 |
261 |
31/2 |
2816 |
19.421 |
0.750 |
2.839 |
127 |
481 |
90 |
341 |
52 |
197 |
G/m： Gallon/min | L/m: Liter/min
LW-440Parameter |
(stroke/Min.) |
320 |
270 |
220 |
||||||
Rated Input (HP) |
440 |
380 |
320 |
|||||||
Liner Dia.（in） |
Pressure |
Gallon/Turn |
Liter/Turn |
G/m |
L/m |
G/m |
L/m |
G/m |
L/m |
|
psi |
Mpa |
|||||||||
41/2 |
1710 |
11.793 |
1.239 |
4.690 |
397 |
1503 |
335 |
1268 |
273 |
1033 |
4 |
2169 |
14.959 |
0.979 |
3.706 |
313 |
1185 |
264 |
999 |
215 |
814 |
31/2 |
2816 |
19.421 |
0.750 |
2.839 |
240 |
908 |
202 |
764 |
165 |
625 |
G/m： Gallon/min | L/m: Liter/min
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