Multi-Turn Worm Gearbox
Welcome to Viral Industries – a leading multi turn worm gearbox manufacturer and supplier in the USA, Europe, Canada & Gulf. With over 13 years of experience, we have built a reputation for producing top-quality multi-turn worm gearboxes. Within a short period of time, we’ve earned well-known clients from around the globe and also some reputed end users in various fields. Furthermore, our multi-turn worm gearboxes can deliver torque ranging between 1100 Nm – 100,000 Nm (811 lbf-ft – 73756 lbf-ft).
Looking for a durable multi-turn worm gearbox? Look no further than Viral Industries. We have a team of skilled experts ready to provide you with the best multi-turn gearbox for your industry. Feel free to contact us.
Note: Our manufacturing unit is only in India, but we export multi-turn worm gearboxes to the USA, Europe, Canada, and Gulf.
Models of Multi-Turn Worm Gearbox
Our Multi-Turn Worm Gearbox models, MVW (manual) and MVWE (actuator-driven), deliver torque from 1,100 Nm to 100,000 Nm with a self-locking design, IP65-IP68 protection, and ISO 5210 compliance for reliable control of gate, globe & check valves in water, oil, gas & power applications.
Multi-Turn Worm Gearbox (MVW Models for Manual or Hand-Wheel Operation)
Engineered for high-torque, multi-turn valve control, our MVW series delivers 1,100-100,000 Nm torque with low hand-wheel effort and a self-locking design. Ideal for gate, globe & check valves in water, power & industrial systems.
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| Viral Ind. Model No. | Output torque capacity | Ratio | M A ( ±10 % ) | Hand-wheel Diameter | Hand-wheel Effort | |||
|---|---|---|---|---|---|---|---|---|
| Nm. | lbf-ft | mm | inch | lbs | Kilogram | |||
| MVW-10 | 1,100 | 811 | 42 | 15 | 400 | 16 | 82.5 | 37.4 |
| MVW-20 | 2,400 | 1,770 | 52 | 20 | 500 | 20 | 108.0 | 49.0 |
| MVW-30 | 3,000 | 2,213 | 52 | 20 | 600 | 24 | 113.0 | 51.0 |
| MVW-40 | 4,000 | 2,950 | 55 | 21 | 600 | 24 | 142.8 | 64.8 |
| MVW-60 | 6,000 | 4,425 | 52 | 20 | 600 | 24 | 225.0 | 102.0 |
| MVW-100 | 10,000 | 7,375 | 51 | 19 | 700 | 28 | 321.4 | 145.8 |
| MVW-150 | 15,000 | 11,063 | 55 | 21 | 700 | 28 | 459.1 | 208.2 |
| MVW-250 | 25,000 | 18,440 | 52 | 24 | 700 | 28 | 669.5 | 303.7 |
| MVW-500 | 50,000 | 36,878 | 56 | 21.8 | 900 | 28 | 1146.6 | 520.1 |
| MVW-1000 | 100,000 | 73,756 | 60 | 23 | 1000 | 28 | 1956.2 | 887.3 |
Multi-Turn Worm Gearbox (MVWE Models for Actuator Operation)
Engineered for automated gate, globe & check valves, our MVWE series delivers 1,100-100,000 Nm torque with ISO 5211 flanges and precise input matching. Ideal for water, power & industrial systems needing reliable actuator control.
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| Viral Ind. Model No. | Output torque capacity | Ratio | M A ( ±10 % ) | Input torque capacity | Mounting Flange at Actuator Side (ISO 5211) | ||
|---|---|---|---|---|---|---|---|
| Nm. | lbf-ft | Nm. | lbf-ft | ||||
| MVWE-10 | 1,100 | 811 | 42 | 15 | 73 | 54 | F10, F14 |
| MVWE-20 | 2,400 | 1,770 | 52 | 20 | 120 | 89 | F10, F14 |
| MVWE-30 | 3,000 | 2,213 | 52 | 20 | 150 | 111 | F10, F14 |
| MVWE-40 | 4,000 | 2,950 | 55 | 21 | 190 | 140 | F10, F14 |
| MVWE-60 | 6,000 | 4,425 | 52 | 20 | 300 | 221 | F10, F14 |
| MVWE-100 | 10,000 | 7,375 | 51 | 19 | 500 | 369 | F10, F14 |
| MVWE-150 | 15,000 | 11,063 | 55 | 21 | 714 | 527 | F14, F16 |
| MVWE-250 | 25,000 | 18,440 | 52 | 24 | 1042 | 768 | F14, F16 |
| MVWE-500 | 50,000 | 36,878 | 56 | 21.8 | 2294 | 1692 | F14, F16, F25 |
| MVWE-1000 | 100,000 | 73,756 | 60 | 23 | 4348 | 3207 | F16, F25 |
Multi-Turn Worm Gearbox with Spur Gearbox (MVWSGA, MVWESGA)
These models are available for either manual or actuator operation. The additional spur gearbox will be added to reduce the hand-wheel effort and input torque. The ratio of the gearbox will be higher as per the requirement of input torque.
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Multi-Turn Worm Gearbox with Both Side Shaft
Engineered for dual-sided valve control or synchronized operation, our gearbox features input and output shafts on both sides, ideal for complex industrial setups requiring balanced torque distribution and flexible mounting in water, power & process systems.
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Valve Mounting Detail
Ensure seamless integration, our multi-turn worm gearboxes support ISO 5210 flanges (F10 to F48) and spindle diameters from 45mm to 185mm, designed for a perfect fit with gate, globe & check valves across global industrial applications.
| Viral Ind. Model No. | Valve Side Mounting Flange(ISO 5211) | Max. Spindle Diameter (mm) |
|---|---|---|
| MVW-10 / MVWE-10 | F12, F10 | 45 |
| MVW-20 / MVWE-20 | F16, F14, F12 | 55 |
| MVW-30 / MVWE-30 | F14, F16 | 60 |
| MVW-40 / MVWE-40 | F16, F25 | 70 |
| MVW-60 / MVWE-60 | F16, F25 | 80 |
| MVW-100 / MVWE-100 | F16, F25, F30 | 85 |
| MVW-150 / MVWE-150 | F30, F35 | 100 |
| MVW-250 / MVWE-250 | F30, F35, F40 | 110 |
| MVW-500 / MVWE-500 | F35, F40 | 155 |
| MVW-1000 / MVWE-1000 | F40, F48 | 185 |
Features:
- Clockwise rotation of input will give clockwise rotation of output.
- Self-Locking gearbox.
- Bearings supported assembly.
- Suitable for Actuator operation.
- Grease Lubricant Gearbox.
- Higher ratio options to reduce effort.
- Locking Arrangement.
- Available for marine application.
- Available for horizontal hand-wheel orientation.
Bore Options for Worm-Wheel Quadrant:
- Round Shape with multiple key-way
- Square Shape
- Hexagon Shape
Temperature Limit:
- Normal application -20˚C To 120˚C
- High temperature application up to 150˚C
- Low temperature application up to -50˚C
Material Options for Stem sleeve:
- Phosphorus Bronze (PB-2)
Enclosure:
- IP-65 ,IP-67, IP-68
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Why Choose Us?
At Viral Industries, we are driven by innovation, integrity, and engineering excellence. Our expertise in valve gearbox manufacturing allows us to deliver reliable solutions that adapt to your industry’s toughest challenges - ensuring performance, precision, and long-term trust.
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Flexibility
We understand that every industry has unique requirements. That’s why our manufacturing process is designed for customization and adaptability - ensuring that every gearbox we produce meets your exact operational needs.
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Quality
Quality is at the core of everything we do. From raw material selection to final inspection, we follow stringent quality standards to deliver gearboxes that perform flawlessly, even under the most demanding conditions.
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Sustainability
We are committed to sustainable manufacturing practices that minimize waste and energy consumption. Our goal is to build products that not only perform efficiently but also contribute to a greener industrial future.
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Transparency
Honesty and clarity define our partnerships. We maintain open communication throughout every project - from design to delivery - ensuring you always know what to expect, with no hidden surprises.
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Custom Gearbox Solutions. Trusted Worldwide
As a leading valve gearbox manufacturer, we deliver high-performance, custom gearbox solutions for global industrial applications. We design and build durable valve gearboxes that ensure smooth, reliable operation in challenging industrial environments across the globe.
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100+
Satisficed Clients
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21000sq. ft.
area of manufacturing unit
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300Nm to 250000Nm
We manufacture sizes of gearbox
We export in20+Countries
Our Clients
Get the Answers You Need to Move Forward.
Get clear, concise answers to the most common questions about valve gearboxes. Make informed decisions with expert insights and practical guidance.
A multi-turn worm gearbox provides precise linear motion control for gate, globe, and check valves by converting rotary input into multiple stem turns. Commonly used in water treatment, power plants, oil & gas, and buried installations, it delivers torque from 1,100 Nm to 100,000 Nm with self-locking reliability, ideal for high-thrust, fail-safe applications.
MVW: Manual/hand-wheel operation, optimized for low-effort control in remote or backup systems.
MVWE: Actuator-compatible, designed for integration with electric, pneumatic, or hydraulic actuators, featuring ISO 5211 mounting flanges (F10 to F25).
Both support IP65–IP68 protection and operate reliably from –50°C to +150°C.
Yes. All MVW/MVWE models are engineered for rising stem applications, delivering high axial thrust (up to 4,800 kN, depending on valve size). They feature a top-mounted handwheel and removable aluminum bronze stem sleeve, making them ideal for buried, marine, or high-pressure industrial environments.
Absolutely. Every unit comes with IP65, IP67, or IP68-rated enclosures, offering full protection against dust, water immersion, and corrosion. The self-locking worm design ensures position stability even under vibration or pressure surges, critical for offshore, desert, and chemical exposure applications.
Yes. We provide:
MVWSGA/MVWESGA models with integrated spur gearboxes for ultra-high ratios, dramatically reducing hand-wheel effort or actuator load.
Both-side shaft models for synchronized valve control or dual-actuator setups.
Custom ratios and mounting options are available to meet exact project requirements.