The Flow-Valves offer includes a wide range of butterfly valves manufactured by Value Valves, designed for a broad spectrum of industrial applications. We offer concentric butterfly valves (VF-7A), double-offset butterfly valves (VF-9A), and triple-offset butterfly valves (VF-8A). Each of these models is available in various design versions, such as wafer (interflange), flanged, LUG type, as well as with weld-end connections, allowing flexible adaptation to specific installation requirements.

Individual butterfly valve models differ in design, which affects their optimal use under various operating conditions. Concentric butterfly valves (VF-7A) feature a simple design and are suitable for many standard applications, while double-offset (VF-9A) and triple-offset (VF-8A) butterfly valves provide higher resistance to loads, making them an ideal solution for more demanding industrial processes.

Butterfly valves are available in a wide range of materials, allowing their use in diverse environments. Valve bodies, discs, and seals can be manufactured from materials resistant to high temperatures and chemical factors, ensuring long-term and reliable operation under harsh conditions. As a result, Value Valves butterfly valves are widely used in the chemical, petrochemical, and power industries, as well as in water supply and wastewater systems.

In addition, Value Valves butterfly valves are available with various types of actuators, enabling customization to specific customer requirements. They can be equipped with electric, pneumatic, hydraulic, or manual actuators such as gearboxes and hand levers, ensuring convenient and precise control depending on system requirements. The selection of the appropriate actuator depends on specific operating conditions, such as opening speed, required torque, and environmental conditions.

Thanks to a broad product range and high flexibility in material and actuator selection, Value Valves butterfly valves represent an excellent solution for many industrial sectors, offering reliability and efficiency over many years of operation.

Applications of Butterfly Valves

A butterfly valve is a device used to regulate and control the flow of liquids, gases, or other media in piping systems and can also serve as a complete shut-off or open-flow device. It operates by means of a rotating disc located within the flow of the medium; by adjusting the angle of rotation, the flow rate through the pipeline is controlled. The main types of butterfly valves include concentric, double-offset, and triple-offset valves, which differ in design and application. Adjusting the disc rotation angle allows smooth and precise flow control, making butterfly valves an extremely versatile and efficient solution in many industrial fields.

Different types of butterfly valves are widely used across many industries and industrial installations, serving as a key component for controlling media flow. Butterfly valves are used in district heating systems, gas installations, chemical plants, water supply systems, fuel systems, geothermal installations, cooling systems, and wastewater treatment plants, where they play a vital role in ensuring reliable and efficient flow management. Due to their design and versatility, butterfly valves can meet the requirements of even the most complex engineering systems.

It is difficult to imagine a properly functioning installation without butterfly valves—whether it is a concentric valve with manual operation used in simpler systems or a more advanced double- or triple-offset butterfly valve with electric actuation used in complex and heavily loaded industrial systems. In all cases, butterfly valves provide precise flow control, safety, energy savings, and reduced risk of failure, making them an indispensable element of any installation.

Value Valves Butterfly Valves – VF-7A, VF-9A Series and More

Value Valves butterfly valves of the VF-7A, VF-9A, and other series are widely used in various industrial sectors, offering high reliability and performance under demanding operating conditions. Each type of Value Valves butterfly valve is designed for different operating environments, making these products suitable for diverse technological requirements.

Concentric butterfly valves, such as the VF-7A model, equipped with manual or pneumatic actuators, are primarily used in less demanding installations where simplicity of design and ease of operation are required. They are used in systems transporting water, air, compressed air, and other media with standard temperature and pressure parameters. Thanks to their design and reliability, concentric butterfly valves are used in water infrastructure, ventilation systems, the food industry, and sugar plants, where they control the flow of water and other media in production processes.

Double-offset butterfly valves, such as the VF-9A model, feature a more advanced design that provides higher strength and greater torque. Thanks to the double offset, these valves ensure excellent tightness and are used in systems with higher operating parameters, such as increased pressure or temperature. Double-offset butterfly valves are widely applied in the chemical, petrochemical, and food industries, including alcohol production, where control of aggressive or viscous media is critical.

The most technologically advanced are triple-offset butterfly valves, which offer even higher resistance to extreme operating conditions, including very high pressure and temperature. Their design is particularly valued in industries requiring reliable operation under harsh conditions, such as the fuel, petrochemical, pharmaceutical, and food industries, including alcohol production. Thanks to their exceptional tightness and durability, triple-offset butterfly valves form the backbone of systems where controlling high-parameter media is crucial for process safety and efficiency.

All Value Valves butterfly valves—from concentric to offset designs—guarantee reliability, durability, and high manufacturing quality, making them an ideal solution for many industrial sectors. The selection of the appropriate valve type depends on specific installation requirements such as pressure, temperature, and the characteristics of the transported medium. Thanks to the variety of available models, these products offer flexibility, enabling optimal adaptation to both simple systems and the most demanding industrial applications.

Types of Butterfly Valve Actuators: Manual, Electric, Pneumatic, and More

Butterfly valves can operate both in control systems—precisely regulating media flow—and in on/off mode, effectively opening or closing the flow. Due to their versatility, butterfly valves can be fitted with a wide range of actuators, including manual, electric, pneumatic, and other types. The choice of actuator and operating mode depends on the specific application and design concept, allowing optimal adaptation to system requirements. Thanks to the wide range of available options, Value Valves butterfly valves ensure reliability and efficiency under all operating conditions. Below is a detailed overview of the available solutions.

1. Manual Actuators

Butterfly valves equipped with manual actuators can be used both for flow regulation (with limited precision) and primarily in on/off systems, where they serve as a fast and reliable means of opening or closing the flow. Manual actuators, such as hand levers or manual gearboxes, allow convenient and efficient control of valve opening without the need for an external power supply. These actuators are ideal for installations with limited automation requirements or where access to electric or pneumatic power is restricted. Due to their simple design, manual actuators are reliable and easy to maintain, making them an economical and durable solution.

Manual actuators used by Value Valves include:

• Hand lever – used for valves up to DN150
• Mechanical gearbox – used without limitation, recommended for valves DN200 and above

1.1 Hand Levers

Butterfly valves with hand levers are used where simple, manual flow control is required without the need for automation. This type of actuator is ideal for systems where valve position changes are infrequent and precise regulation is not required. Hand-lever-operated valves are commonly used where there is no access to electric, pneumatic, or hydraulic power, or where more complex actuators would be uneconomical.

They are recommended for applications with low automation requirements, such as small water supply and wastewater systems, irrigation systems, and installations where valve operation is rare or irregular. Hand levers are most commonly used for on/off butterfly valves. Thanks to their simple design, hand levers are reliable, easy to operate, and require minimal maintenance.

An option is available to equip hand levers with limit switches.

1.2 Mechanical Gearboxes

Mechanical gearboxes are an exceptionally versatile solution suitable for use across the full range of nominal diameters and pressures, making them widely applicable in many industrial sectors. Their design ensures smooth, stepless control, allowing use both for shut-off and flow regulation applications. This flexibility makes mechanical gearboxes suitable for a wide range of installations, from simple systems to complex industrial processes.

As standard, mechanical gearboxes are equipped with mechanical position indicators, allowing quick and easy identification of the current valve position. Upon request, they can also be fitted with position locks to prevent accidental movement, enhancing system safety and stability.

Additionally, mechanical gearboxes can be equipped with limit switch boxes, enabling remote monitoring and automatic shutdown when extreme valve positions are reached. These features increase operating comfort and safety, particularly in complex industrial installations where reliable control of flow shut-off and regulation is critical.

2. Electric Actuators

Electric actuators are a modern solution widely used for butterfly valves in shut-off and flow control applications across various industries. They are characterized by high reliability and precise operation, making them ideal for systems requiring accurate flow control. Electric actuators are available in a wide range of designs, allowing adaptation to diverse operating conditions.

Electric actuators convert electrical energy into rotational motion that drives the valve mechanism, enabling smooth and precise opening and closing. Depending on application requirements, they can be configured for different rotation ranges, providing optimal flow regulation.

One of the key advantages of electric actuators is their capability for remote control, significantly increasing operational comfort and safety, especially in large and complex industrial installations. They can also be integrated with automation systems, becoming a key component of modern flow management systems.

Electric actuators are highly reliable and durable, featuring low energy consumption and high resistance to environmental conditions. They are suitable for both indoor and outdoor use and are available with various IP protection ratings, making them ideal for harsh environments such as chemical, petrochemical, food, and power industries.

Furthermore, electric actuators can be easily integrated with sensors such as temperature, pressure, and flow transmitters, enabling full automation and adaptive control in response to changing operating conditions.

In summary, electric actuators offer precise regulation, remote control, automation integration, high reliability, and energy efficiency, making them an ideal choice for modern industrial installations.

3. Pneumatic Actuators

Pneumatic actuators are a highly versatile solution offering a wide range of applications for butterfly valves of various diameters and nominal pressures. Due to their simple design, reliability, and high operating force, pneumatic actuators are ideal for both shut-off and flow control applications across many industries.

Pneumatic actuators are available in double-acting and single-acting versions, allowing flexible adaptation to different installations. Double-acting actuators provide symmetrical operating forces for precise opening and closing, while single-acting actuators are used where movement in one direction is required.

Single-acting actuators can also be configured for fail-safe positions, such as normally open (NO) or normally closed (NC), ensuring safe valve positioning in the event of air supply loss—an essential feature in safety-critical industries such as chemical, pharmaceutical, and food processing.

For shut-off applications, pneumatic actuators can be equipped with control valves and limit switch boxes. Control valves enable precise air flow management, while limit switch boxes provide position feedback and enable full automation.

For flow regulation applications, pneumatic actuators can be fitted with positioners controlled by a 4–20 mA analog signal, allowing precise positioning between fully open and fully closed states. This makes them ideal for applications requiring accurate control, such as chemical, petrochemical, food processing, and HVAC systems.

Thanks to their wide range of configurations, pneumatic actuators offer a flexible and efficient solution for industrial applications, optimizing processes, improving safety, and ensuring long-term reliability under demanding operating conditions.

Contact and Product Overview

We invite you to contact us and review the available valve catalogs.