Pneumatic actuated wafer-type butterfly valve – double acting, preferred for precise flow control in industrial liquid and gas systems. This type of valve can be easily installed between two flanges and operates in both directions using a double-acting pneumatic actuator, providing reliable and fast control. This product, supplied by Unox, offers a compact design that allows installation in tight spaces.

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Technical Structure and Manufacturing Features

The body of the wafer-type butterfly valve is made from GGG-40 ductile cast iron. This construction increases durability and ensures long service life under harsh conditions. The disc is manufactured from SS304 stainless steel, while the gasket provides sealing using EPDM material. The stem is also made of stainless steel, offering corrosion resistance. This product operates safely within a temperature range of –10°C to +110°C. Like other flanged products, it is available in pipe diameters ranging from DN40 (1½”) to DN300 (12”).

Advantages of Double-Acting Actuators

Double-acting pneumatic actuators use air pressure for both opening and closing operations. This design allows for more controlled movement and prevents sudden flow fluctuations in processes. When integrated with similar products, such as pneumatic butterfly valves, they can be incorporated into automation systems, enabling remote control.

What Are the Application Areas?

This type of valve is used in a wide range of applications, from HVAC systems to the food industry. It is actively employed in water treatment and distribution systems, shipbuilding, the mining industry, and fire-fighting infrastructure. It is also safely preferred in chemical environments. Different application scenarios can be examined in detail on Unox Online.

Construction Details and Durability

The cylinder body is manufactured using aluminum extrusion, minimizing surface friction. The compact piston design allows reverse installation and operates at high speed. Modular gears are machined with specialized equipment, providing quiet operation. All product components fully comply with ISI 5211, DIN 3337, and VDI/VDE 3845 NAMUR standards. It can also be easily integrated with accessories such as directional valves and switch boxes.