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 |
