Quarter Turn Gear Operator
Features:
- Bevel gearbox for multi-turn valves are used to operate (open-close) linear type of valves like gate valve, globe valve and pen stock valve.
- These models are used for both manual operation and motorised operation (with adaptable changes).
- Any VGB model can be chosen by the torque requirement or valve size.
- Bevel gear pair made of case hardened material with proper heat treatment to withstand high bending and tensile stresses (800 N/mm2) providing long lasting life.
- Design for ease in operation with higher efficiency criteria.
- Specifically fabricated manual hand-wheel to provide assistance.
- Precision achieved at its best in transmission with modern design
Specification:
| Model Number | I/P Torque (N.M.) | O/P Torque (N.M) | Gear Ratio | Maxi. Thrust (KN) | Mechanical Advantage ± 10% | Approximate Weight (Kg) | Mounting Flange ISO 5211 | A | B |
| VGB-150 | 150 | 150 | 1:1 | 28 | 1 | 15 | F10 | 128 | 140 |
| VGB-300 | 100 | 300 | 3:1 | 40 | 3 | 19 | F14 | 140 | 180 |
| VGB-600 | 150 | 600 | 4:1 | 125 | 4 | 21 | F14 | 140 | 210 |
| VGB-1000 | 250 | 1000 | 4:1 | 235 | 4 | 27 | F16 | 145 | 220 |
| VGB-1500 | 400 | 1500 | 4:1 | 295 | 3.8 | 32 | F16 | 152 | 255 |
| VGB-2500 | 500 | 2500 | 5:1 | 340 | 5 | 55 | F25 | 160 | 300 |
| VGB-4000 | 800 | 4000 | 4.5:1 | 430 | 5 | 75 | F30 | 183 | 375 |
| VGB-6000 | 1500 | 6000 | 5:1 | 700 | 4 | 160 | F35 | 230 | 430 |
| VGB-8000 | 1800 | 8000 | 5:1 | 900 | 4.4 | 175 |

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