Pneumatic valve

The regulating pneumatic triple eccentric flange butterfly valve can be connected with double flanges or clamps. The valve plate is a triple eccentric structure, and the sealing surface is a metal hard seal. The main material is stainless steel or carbon steel. Operated by a pneumatic actuator, it enables remote quick switching or 4-20mA analog adjustment. The valve body is made of cast steel WCB, stainless steel 304/CF8316L/CF8M can be selected, and the pneumatic actuator has single acting spring return type/double acting piston type

Pneumatic three eccentric hard seal butterfly valve flange butterfly valve is a high-performance fluid control device that combines advanced design and industrial requirements. Pneumatic actuators can be selected from piston type, spring type, and fork type, using the principle of three eccentric geometry design. Through the triple eccentric superposition between the valve shaft, valve plate, and valve seat, the frictional resistance during the opening and closing process is effectively reduced, achieving non-contact movement of the sealing surface throughout the entire process. This design method can significantly improve the sealing performance and valve service life under high temperature, high pressure, or frequent operation conditions.

The core components of the valve are made of high hardness alloy materials, and the sealing surface is processed through precision grinding technology to form a metal hard sealing structure. Compared to traditional soft seal butterfly valves, the hard seal design performs more outstandingly in terms of wear resistance, erosion resistance, and adaptability to medium temperature ranges, and can meet the requirements of wide temperature range working conditions from -29 ℃ to 600 ℃. The flange connection structure complies with international standards, making it easy to quickly connect with different specifications of pipeline systems, while enhancing the overall pressure bearing capacity of the valve body.

The introduction of pneumatic actuators enables valves to have automated control functions, supporting input of switch or analog signals, and enabling remote control, proportional adjustment, and system interlocking. The optional protection level of the actuator can cover IP67 to IP68 standards, ensuring stable operation in harsh environments such as humidity and dust. Some models are equipped with manual operation devices to provide support for emergency operations in case of emergencies.

In the field of industrial applications, this product is suitable for fluid control systems in industries such as petrochemicals, power energy, and metallurgical manufacturing, especially for handling granular media, high-temperature steam, or corrosive fluids. The specially designed valve seat structure effectively reduces the generation of medium eddy currents and minimizes the damage of cavitation to the valve body. The optimized flow channel shape enables the valve to have a lower flow resistance coefficient, which helps to reduce system energy consumption.

In terms of maintenance, modular design simplifies the disassembly and maintenance process, and key components support independent replacement. The valve has undergone strict pressure testing and leakage detection as a whole, meeting the requirements of international standards such as API and ANSI. According to specific working conditions, different surface treatment processes can be provided, including spraying, electroplating, or surfacing hard alloy schemes, to enhance the corrosion resistance in specific environments.

This type of butterfly valve has expanded the applicability of traditional butterfly valves through structural innovation and material optimization, while maintaining its inherent advantages of small volume and light weight. Its balanced performance parameters make it an economical solution to replace some gate valves and globe valves under medium and high pressure conditions, providing a reliable choice for fluid control in modern industrial pipeline systems.