Pneumatic control butterfly valve with positioner

Cập nhật lần cuối ngày 14/06/2023 lúc 04:41 chiều

Pneumatic control butterfly valve with positioner, in addition to the normal flow opening and closing function, this device can also be used, to regulate the flow of fluid inside the pipeline system, with diverse types, imported. Imported directly from the manufacturer, we are committed to products that fully meet the technical requirements, as well as product quality.

Introduction to PPneumatic control butterfly valve with positioner

The Pneumatic control butterfly valve with positioner is a Pneumatic control butterfly valve with positioner integrated with a rotary electro pneumatic positioner. It allows for flow regulation (adjustment for high or low flow rates) in addition to the usual function of opening and closing the flow.

The valve operates by changing the tilt angle of the butterfly valve disc. To adjust this tilt angle, a suitable pressure of compressed air (approximately 3 to 8 bar) is supplied to the actuator.

The common diameter sizes of the valve body range from DN50 to DN800, with a wide range of sizes combined with the diversity of materials used. This enables the device to meet the requirements of various pipeline systems.

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Structural Features of Pneumatic control butterfly valve with positioner

If you are not aware, the Pneumatic control butterfly valve with positioner has a similar structure to conventional pneumatic control butterfly valves. The special feature in the structure of this device is the addition of a rotary electro pneumatic positioner, which enables flow regulation of the fluid. In summary, the basic structure of the Pneumatic control butterfly valve with positioner consists of three main components:

• Butterfly valve body: Similar to conventional devices, it directly controls the opening, closing, and flow regulation of the fluid within the pipeline system. The valve body can be made from various materials such as cast iron, steel, stainless steel, etc., depending on the compatibility with the system fluid.

• Actuator: This device receives high-pressure compressed air to generate operating torque for the valve. Most of the components of the actuator are made of aluminum or aluminum alloy.

• Rotary electro pneumatic positioner: This device functions as a sensor to detect the tilt angle of the valve disc and adjusts the supply of compressed air to the actuator according to the control signal. It is also the component that enables flow regulation of the fluid.

Special Features of Pneumatic control butterfly valve with positioner

The Pneumatic control butterfly valve with positioner can be considered an upgraded version compared to the conventional pneumatic butterfly control valve, hence it incorporates all the features of a pneumatic control valve, including:

• Low resistance of the valve to the fluid flow, allowing the fluid to flow in two different directions.
• The valve has fast opening and closing times, and pneumatic control helps save time and effort in operating the device.
• It can be used with various types of fluids, liquids, particles, and powders (such as cement, sugar, sand, etc.), and some devices with high tightness can be used for pneumatic applications as well.
• The simple structure provides high durability and stable operation in various systems.

Additionally, the valve has a special feature due to the installation of an additional pneumatic motion positioning device that transmits electrical signals:

• The valve disc can be adjusted in inclination, allowing effective regulation of the fluid flow.
• Easy signal transmission wire connection, enabling users to adjust the device from the control center.

Diverse Varieties of Pneumatic control butterfly valve with positioners

The characteristic of pneumatic butterfly control devices is that they are individually manufactured with separate valve bodies, actuators, positioners, and all these components are standardized, allowing them to be interchangeable. Only the torque generated by the actuator needs to be considered, ensuring it is large enough to open and close the valve body. Therefore, linear pneumatic butterfly control devices are highly diverse, and valve classification is mainly based on the design and material of the valve body.

Below are some types of Pneumatic control butterfly valve with positioners.

Ductile Iron Pneumatic Butterfly Control Valve

Ductile iron pneumatic butterfly control valves are a product line with relatively low cost and moderate load-bearing capacity. However, these devices are capable of meeting the working pressure requirements of many common systems.

Ductile iron valve devices are often designed with synthetic rubber gaskets for sealing, and most valves can operate at a pressure rating of PN16. The valve bodies are designed with medium-sized dimensions to ensure safety because the larger the valve cross-section, the greater the force exerted on the valve disc and indirectly on the valve body.

Pneumatic control butterfly valve with positioner

Originating from the characteristics of steel, which have good temperature and pressure resistance, the Pneumatic control butterfly valve with positioner is constructed with a steel body to meet the pressure requirements of large fluid systems. In terms of temperature, butterfly valves are not the optimal choice for systems with high temperatures because excessive heat can negatively affect the sealing gasket.

The valve disc can be made of stainless steel or ductile iron, and the sealing gasket can be made of synthetic rubber for normal working conditions or Teflon for more challenging operating conditions.

Authentic Pneumatic control butterfly valve with positioner at VIVA

As you may know, industrial machinery and equipment, in general, have high requirements for accuracy, durability, and stable operation. To meet all of these requirements, it is often necessary to choose high-quality products distributed by reputable suppliers.

Understanding the importance of Pneumatic control butterfly valve with positioners, we have researched various suppliers to select quality product lines that are suitable for conditions in Vietnam while considering cost-effectiveness and balancing product features with investment costs in the most reasonable way.

If you are having difficulty finding a reliable supplier of these products, you can consider our company, which specializes in supplying industrial equipment and providing technical support. We always strive to provide customers with the best possible products. As a testament to our quality, all pneumatic control butterfly valves are supported by a warranty period of 12 to 18 months, depending on the specific product.

See more products: Single-Acting Pneumatic Control Butterfly Valve