GLW7500-GLW17.5K
GLW7500-GLW17.5K Quarter-turn Manual Worm Gearbox Series
GLW7500-GLW17.5K is organized as one product page group from source sheet GLW-06, with actual model variants preserved separately.
GLW7500-GLW17.5K Quarter-turn Manual Worm Gearbox Series
GLW7500-GLW17. 5K is a high torque manual valve gearbox for quarter-turn operation. It includes worm gear transmission and ISO 5211 interface.
The GLW7500-GLW17. 5K series is a high torque manual valve gearbox designed for quarter-turn operation. It transmits torque via a worm gear transmission, providing output torque from 7500 to 17500 Nm. The gearbox features an ISO 5211 valve gearbox interface for direct mounting on large butterfly, ball, plug valves, and dampers.
Performance Parameters
Units: torque N·m · thrust kN · linear dimensions mm
| Model | Out. Tq. | In. Tq. | Ratio | Eff. |
|---|---|---|---|---|
| GLW7500 | 7500 | 80 | 379:1 | 94.75 |
| GLW010K | 10000 | 97 | 413:1 | 103.3 |
| GLW13.5K | 13500 | 84 | 663:1 | 138.5 |
| GLW17.5K | 17500 | 100 | 735:1 | 176.4 |
Connection Dimensions
Unit: mm
| Model | Flange No. | D | D0 | PCD Thread | Boss D | Pin Qty | f | Max. Stem Dia. d | H2 | HW Ø |
|---|---|---|---|---|---|---|---|---|---|---|
| GLW7500 | F16/F20/F25 | 210/300/300 | 165/205/254 | 4×M20-30/8×M16-24/8×M16-45 | 130/140/200 | 2-Φ16/4-Φ16/4-Φ16 | 5 | 80 | 110 | 600 |
| GLW010K | F25/F30 | 300/350 | 254/298 | 8×M16-24/8×M20-30 | 200/230 | 4-Φ16/4-Φ20 | 5 | 100 | 134 | 600 |
| GLW13.5K | F25/F30 | 350/350 | 254/298 | 8×M16-24/8×M20-30 | 200/230 | 4-Φ20/4-Φ20 | 5 | 105 | 152 | 600 |
| GLW17.5K | F25/F30 | 350/350 | 254/298 | 8×M16-24/8×M20-30 | 200/230 | 4-Φ20/4-Φ20 | 5 | 110 | 157 | 600 |
Overall Dimensions
Unit: mm · Weight: kg
| Model | A | B | C | L | L1 | H | H1 | H3 | L2 | H4 | E | K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLW7500 | 210/300/300 | 292/337/352.5 | 277/277/277 | 325/370/445 | 24/24/24 | 140/140/140 | 63/63/63 | 148.5/148.5/125.5 | 220/220/295 | 55 | 20 | 6 |
| GLW010K | 300/350 | 362.5/387.5 | 298/317 | 464/489 | 24/24 | 150/160 | 80/85 | 142.5/167.5 | 314/331 | 55 | 20 | 6 |
| GLW13.5K | 300/350 | 392.5/417.5 | 317/317 | 481/506 | 24/24 | 160/160 | 85/85 | 167.5/167.5 | 331/331 | 55 | 20 | 6 |
| GLW17.5K | 300/350 | 406/431 | 350.5/350.5 | 494/519 | 24/24 | 173.5/173.5 | 85/85 | 167.5/167.5 | 344/344 | 55 | 20 | 6 |
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 GLW7500-GLW17.5K manual valve gearbox?
The torque range is 7500 to 17500 Nm for the GLW7500-GLW17. 5K series.
What type of gear transmission does the high torque worm gearbox use?
It uses a worm gear transmission with a self-locking function for secure valve positioning.
Does the gearbox support ISO 5211 valve gearbox interface mounting?
Yes, it includes an ISO 5211 valve gearbox interface for direct mounting on quarter-turn valves.
Which valve types are compatible with this high torque manual valve gearbox?
The gearbox is suitable for manual operation of large butterfly valves, ball valves, plug valves, and dampers.
What is the protection rating of the GLW7500-GLW17.5K quarter turn gearbox?
The gearbox is IP68 rated for protection against dust and water ingress in harsh environments.
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.