• Innovative Automation Systems
• Guaranteed Quality
• On-Site Services
• Optimized Custom Solutions

Hydropower stations are engineered for longevity, often exceeding a century of reliable operation with proper maintenance and upgrades. To ensure continued performance, safety, and efficiency, modernization is essential.

VAPTECH supports the renewal of existing hydropower facilities by offering:

• Detailed diagnostics and performance analysis

• Emergency repair and intervention services

• Supply of OEM spare parts

• Refurbishment and redesign of key components to enhance turbine efficiency

• Modernization of hydraulic, control, and automation systems

• Installation of additional capacity to meet growing energy demands

Our tailored modernization solutions help operators extend the lifespan of their assets, improve operational efficiency, and align with the latest technological and environmental standards.

• Highly Efficient & Customized Solutions
• In-House Design & Production
• Innovative Automation Systems
• Short Delivery Time

Francis turbines are ideally suited for medium-head applications with moderate flow variability. VAPTECH’s Francis turbines deliver high efficiency, low cavitation, and minimal vibration across a broad specific speed range (ns 80 to ns 300), ensuring reliable and long-term operation in demanding environments.

Each turbine is equipped with a precision-engineered runner, manufactured either by welding or CNC machining from high-grade stainless steel, and designed in full compliance with IEC standards.

All Francis turbines are fully assembled, pressure-tested, and functionally verified in VAPTECH’s factory prior to shipment. This enables streamlined on-site installation, reduced commissioning time, and a high degree of quality assurance from production to operation.

• Highly Efficient & Customized Solutions
• In-House Design & Production
• Innovative Automation Systems
• Short Delivery Time

Pelton turbines are ideal for sites with high to medium heads and significant flow variation. VAPTECH offers customized Pelton turbine solutions with horizontal or vertical shaft configurations and 1 to 6 injectors, depending on project requirements.

Our Pelton runners are CNC-machined from a single block of high-grade stainless steel forging, ensuring exceptional strength, precision, and durability. Each runner is designed and verified in accordance with IEC standards.

VAPTECH injectors feature hydraulically operated individual deflectors, enabling immediate redirection of the water jet in emergency situations. All injectors undergo rigorous functional and pressure testing to ensure maximum performance and reliability under all operating conditions.

VAPTECH’s Kaplan turbines are designed for hydropower projects with low or very low heads and significant flow variation. Available in vertical or horizontal (pit) shaft arrangements, each turbine features 3 to 6 runner blades with double regulation, ensuring optimal efficiency across a wide operating range.

The runner is produced from high-quality stainless steel castings and CNC-machined to meet the highest precision standards. Both metal and concrete spiral case options are available for vertical configurations, while horizontal setups can be equipped with either metal or concrete pit designs.

All Kaplan turbines are engineered, manufactured, and tested in compliance with IEC standards to guarantee performance, durability, and adaptability to site-specific conditions.

• Optimized Custom Solutions
• In-House Design & Production
• Remote Access
• Preventive & Predictive Solutions

VAPTECH’s digital control system is engineered to ensure full automation, regulation, and seamless synchronization of all hydromechanical systems within a hydropower plant:

• Turbine regulation system

• Turbine inlet valve

• Bypass system

• Intake hydraulic steel structures

Developed by VAPTECH’s in-house automation experts, the control algorithm guarantees smooth and efficient operation across the entire electromechanical system. Based on the specific needs of the customer and grid operator, the turbine regulation mode can be configured to respond either to water intake levels or to the generating unit’s capacity.

The system includes secure remote access via wireless connection for monitoring and control.

VAPTECH’s innovative software platform enables real-time monitoring, preventive and predictive maintenance, and streamlined fault diagnostics — ensuring higher uptime, reduced operating costs, and optimal system performance.

• In-House Design & Production
• Low losses & Customized Solutions
• Guaranteed Quality
• On-Site Services

VAPTECH’s standard butterfly valves are designed for medium and low-pressure applications, covering diameters from 300 to 1400 mm and pressure ratings of 6, 10, 16, and 25 bar. Standard actuation is achieved through a hydraulic cylinder, with valve closing supported by a counterweight for secure and reliable operation.

Beyond the standard range, VAPTECH develops customized butterfly valves with diameters up to 5000 mm and pressure ratings of up to 40 bar. Depending on the relationship between inlet diameter, pressure, and flow velocity, the rotor is engineered either as a solid disc or a lattice structure to ensure optimal hydraulic performance.

Alternative actuation options include double-acting hydraulic cylinders, electric actuators, or manual operation via a hand-wheel. Each valve can be supplied with a full set of auxiliary components such as upstream and downstream piping, bypass systems, hydraulic power units, aeration-deaeration devices, penstock rupture protection, and advanced digital control systems to meet the specific requirements of any project.

• In-House Design & Production
• Low losses & Customized Solutions
• Guaranteed Quality
• On-Site Services

VAPTECH’s standard line of spherical valves is engineered for medium and low-pressure applications, covering diameters from 300 to 1000 mm and pressure ratings of 40, 63, and 100 bar. Each valve is actuated by a hydraulic cylinder, with closing ensured by a counterweight mechanism. The sealing between the rotor and valve body is achieved through a movable stainless steel seal, operated by a water-oil pressure system for reliable and durable performance.

For projects beyond standard specifications, VAPTECH designs custom spherical valves with diameters up to 3000 mm and pressure ratings up to 100 bar. Optional configurations include a secondary maintenance seal that allows safe inspection of the main seal without draining the penstock.

Depending on project requirements, actuation can be achieved through a double-acting hydraulic cylinder, an electric actuator, or manual operation via a hand-wheel. Valves can also be delivered with integrated upstream and downstream piping, bypass systems, hydraulic power units, aeration-deaeration devices, penstock rupture protection, and advanced digital control systems.