Pneumatic Actuated U-PVC Butterfly Valve – Single Acting is widely preferred in modern systems for fluid control. This type of valve is made from unplasticized polyvinyl chloride (U-PVC) and is operated with the help of a pneumatic actuator. The actuator moves using air pressure in only one direction, while the return is achieved by spring force. This design reduces energy consumption and provides the advantage of fast response. It is among the product options offered by Unox.

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How Are Structural Features and Material Durability Ensured?

The butterfly valve body is made of U-PVC material, offering high resistance to chemicals. Therefore, it can operate smoothly even in acidic or basic environments. The actuator body is manufactured using aluminum extrusion, providing corrosion resistance on both internal and external surfaces. Additionally, energy efficiency is supported by its low friction coefficient. The pistons used in the system are made from special alloys, offering long-lasting performance. Technical catalogs are accessible through Unox Online.

What Are the Applications and Sectoral Advantages?

“This type of valve is widely used in water treatment plants, chemical processing lines, food production systems, and HVAC infrastructures. It is also safely preferred in agricultural irrigation systems and industrial processes. Its lightweight body design facilitates installation, while maintenance times are minimized. Additionally, thanks to the single-acting actuator, the valve can automatically return to a safe position during sudden power outages. Similar system integration is also achieved with models like the Lug Butterfly Valve.

What Are the Actuator Codes and Control Options?

Pneumatic actuators are configured with torque values ranging from 9 Nm to 400 Nm, depending on system requirements. The following values are defined according to the codes:

UDA 040 = 9 Nm
UDA 052 = 25 Nm
UDA 063 = 50 Nm
UDA 083 = 94 Nm
UDA 092 = 135 Nm
UDA 105 = 270 Nm
UDA 125 = 400 Nm

The control type can be set as either on-off or proportional. Auxiliary equipment such as switch boxes and directional valves is also integrated into the system, enabling remote monitoring and automation control.

Construction Details and Compliance with Standards

The pinion used in the system is made of stainless steel and operates at any installation angle. The gear structures are designed for precise machinery operation while aiming for quiet performance. Industrial plastics are used in the bearing components to minimize wear caused by friction. All parts are designed in compliance with ISI 5211, DIN 3337, and VDI/VDE 3845 NAMUR standards. This design allows for easy replacement of components and reduces maintenance times.