ALW0800-ALW9000
ALW0800-ALW9000 Valve Gearbox Series
ALW0800-ALW9000 is organized as one product page group from source sheet ALW-25, with actual model variants preserved separately.
ALW0800-ALW9000 Valve Gearbox Series
The ALW0800-ALW9000 is an ISO 5211 manual valve gearbox designed for quarter-turn operation. It functions as a worm gearbox for butterfly and ball valves, providing torque transmission in the 800-9000 Nm range. Suitable as a manual worm gearbox for butterfly valve applications.
The ALW0800-ALW9000 manual worm gearbox transmits torque through a worm gear transmission system. It provides quarter-turn operation for butterfly, ball, plug valves, and dampers. The ISO 5211 interface flange ensures direct actuator mounting and valve gearbox compatibility. Torque range spans 800 to 9000 Nm, supporting valve automation and manual gear operation.
Performance Parameters
Units: torque N·m · thrust kN · linear dimensions mm
| Model | Out. Tq. | In. Tq. | Ratio | Eff. |
|---|---|---|---|---|
| ALW0800 | 800 | 48 | 48:1 | 16.8 |
| ALW1200 | 1200 | 80 | 48:1 | 16.8 |
| ALW3000 | 3000 | 150 | 56:1 | 19.6 |
| ALW4500 | 4500 | 250 | 55:1 | 18.55 |
| ALW7500 | 7500 | 400 | 55:1 | 19.25 |
| ALW9000 | 9000 | 500 | 60:1 | 21 |
Connection Dimensions
Unit: mm
| Model | Flange No. | D | D0 | PCD Thread | Max. Stem Dia. d | H2 | Convex (D1×f) |
|---|---|---|---|---|---|---|---|
| ALW0800 | F10/F12 | 150/150 | 102/125 | 4×M10-15 / 4×M12-18 | 40 | 75 | 70×3 / 85×3 |
| ALW1200 | F12/F14 | 175/175 | 125/140 | 4×M12-18 / 4×M16-24 | 45 | 90 | 70×3 / 85×3 |
| ALW3000 | F14/F16 | 210/210 | 140/165 | 4×M16-24 / 4×M20-30 | 65 | 103 | 100×4 / 130×5 |
| ALW4500 | F16/F20 | 250/250 | 165/205 | 4×M20-30 / 8×M16-24 | 70 | 123 | 100×4 / 130×5 |
| ALW7500 | F20/F25 | 300/300 | 205/254 | 8×M16-24 / 8×M16-24 | 80 | 120 | 100×4 / 130×5 |
| ALW9000 | F20/F25 | 300/300 | 205/254 | 8×M16-24 / 8×M20-24 | 100 | 147 | 140×5 / 200×5 |
Overall Dimensions
Unit: mm · Weight: kg
| Model | A | B | C | L | H | H1 | ØM | L2 |
|---|---|---|---|---|---|---|---|---|
| ALW0800 | 125 | 151.5 | / | 196.0 | 65.0 | 42.5 | 300 | 125.5 |
| ALW1200 | 175 | 195.5 | 185.5 | 263.5 | 78.0 | 47 | 500 | 176 |
| ALW3000 | 210 | 246.0 | / | 337.0 | 106.0 | 55 | 600 | 217 |
| ALW4500 | 250 | 296.0 | 286 | 361.0 | 121.0 | 58 | 700 | 226 |
| ALW7500 | 300 | 340.0 | 320 | 423.5 | 140.0 | 58 | 800 | 273.5 |
| ALW9000 | 300 | 350.0 | 345 | 452.0 | 150.0 | 80 | 900 | 289.5 |
Dimensional Drawing
Product Structure View
Engineering Material List
| No. | Part Name | Material | UK Standard | USA Standard |
|---|---|---|---|---|
| 1 | Worm Gearcase | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 2 | Alloy Bushing | SF-1 | SF-1 | SF-1 |
| 3 | Thrust Bearing | Steel | BS 535A99 | AISI/SAE 52100 |
| 4 | Worm Shaft | Steel | BS 080A47 | AISI/SAE 1045 |
| 5 | Worm | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 6 | End Cap | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 7 | Turbine | Ductile Iron | BS 2789 600/3 | ASTM A536 80-55-06 |
| 8 | Cover | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 9 | Position Indicator Gasket | Nitrile rubber | Nitrile rubber | Nitrile rubber |
| 10 | Position Indicator | Steel | BS 080A25 | AISI/SAE 1025 |
| 11 | Handwheel | Steel | BS 080A25 | AISI/SAE 1025 |
| 12 | Lock Plate | Steel | BS 080A25 | AISI/SAE 1025 |
| 13 | Lock Latch | Steel | BS 080A25 | AISI/SAE 1025 |
| 14 | Reducer Gear Case Cover | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 15 | Gear | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 16 | Reducer Main Shaft Gear | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 17 | Reducer Gearcase | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
Compatibility & Actuator Interface
Structured gearbox data for engineering selection and project documentation.
TFC provides engineered gearbox solutions for demanding valve applications, with technical support for model selection, torque matching, project documentation and OEM requirements.
Frequently Asked Questions
What is the torque range of the ALW0800-ALW9000 gearbox?
The torque range is 800 to 9000 Nm as per model specifications.
Does this gearbox support ISO 5211 mounting?
It includes an ISO 5211 flange interface for direct valve and actuator mounting.
Which valve types are compatible with this quarter turn gearbox?
Yes, it is designed for quarter-turn valves including butterfly, ball, plug valves, and dampers.
Does the gearbox have a self-locking mechanism?
The worm gear transmission provides a self-locking function to prevent back-driving.
Can the gear ratio be customized for specific valve torque needs?
Gear ratios are selected to match input torque requirements and valve specifications.
Need engineering assistance?
Send us your valve type, required torque, stem dimensions, flange standard and working conditions. Our engineering team will recommend a suitable gearbox model.