Case Study: Powering Precision - HYTORC India Bolting Solutions at a Hydro Power Plant
Critical infrastructure like that of a hydro power plant in Bhutan required absolute precision and reliability in its maintenance protocols. When dealing with the Main Inlet Valve (MIV), the stakes for safety and efficiency are incredibly high.

The Challenge: Managing Massive Torque Requirements
The primary challenge at the site involved the maintenance and commissioning of tools for the Main Inlet Valve (MIV). This application requires handling 115mm A/F nuts, which demand significant power and specialized equipment to ensure they are loosened and tightened without compromising the integrity of the valve or the safety of the operators.
The facility needed a solution that combined high-capacity hydraulic power with a verified, leak-free system and a team trained to operate it under rigorous site conditions. HYTORC India was able to help.

The HYTORC Solution: The AVANTI-80 and HY-TWIN
To address these requirements, the AVANTI-80 hydraulic torque wrench was deployed alongside the HY-TWIN-230-4S pump. This setup included a 25 foot twin line hose, a specialized reaction arm, and 115mm sockets specifically sized for the MIV application.
The commissioning process was thorough to ensure long-term reliability:
- System Verification: The pump was tested at 10,000 psi prior to operation to confirm that no damage or leakage occurred during transit.
- Onsite Commissioning: The tool was successfully connected and verified to be in proper working order on-site.
- Precision Operation: Following the guidance of the Maintenance Head, the system was operated at 350-400 Bar to successfully loosen the target bolts.

HYTORC India helped the customer with a custom solution to their critical and chronic bolting challenge that a local tool was unable to address for 3+ years. The customer was delighted with our solution and bought the tool on proprietary basis. - Anuj Gupta, Country Manager, HYTORC India

Benefit: Expert Training for Long-Term Efficiency
Beyond just providing hardware, the focus was on ensuring the plant’s personnel were equipped for success. A team of 10 technicians and one junior engineer underwent comprehensive training on operational procedures and safety protocols. This investment in human capital ensures that the plant can perform future maintenance with a high degree of autonomy and safety.

Frequently Asked Questions
How do you maintain Main Inlet Valves in hydropower plants? Hydropower MIV maintenance requires high-capacity hydraulic torque wrenches, such as the AVANTI-80, to handle large nut sizes (like 115mm) while ensuring the system is pressure-tested for leaks.
What tools are best for loosening 115mm bolts in industrial settings? The AVANTI-80 hydraulic torque wrench, paired with a high-pressure pump like the HY-TWIN-230-4S, is an industry standard for loosening large industrial bolts efficiently and safely.
Ready to Upgrade Your Industrial Bolting Strategy?
Ensure your next project is backed by the industry's most reliable tools and expert onsite training. Contact HYTORC today to schedule a consultation or request a demonstration of the AVANTI series for your critical applications.
HYTORC India helped the customer with a custom solution to their critical and chronic bolting challenge that a local tool was unable to address for 3+ years. The customer was delighted with our solution and bought the tool on proprietary basis. - Anuj Gupta, Country Manager, HYTORC India