Pneumatic butterfly valve

Specification parameters

The main parameters of the pneumatic butterfly valve are as follows.

• Nominal Diameter: DN 40 to DN 1400 mm.
• Valve Body Material:  gray cast iron, ductile iron, carbon steel, and stainless steel.
• Applicable Temperature: from -20℃ to 100℃.
• Rotation Angle:  90° ± 3°.
• Control Method: pneumatic, worm gear, electric, and electro-hydraulic linkage.
• Pneumatic Accessories: These include solenoid valves, air filters, positioners, and signal switches, which enhance the performance and control accuracy .
• Functional Purposes: It is mainly used for on/off control, proportional regulation, and emergency shut-off, making it suitable for a variety of industrial applications.
• Applicable Media: liquids, gases, and powders.
• Disc Material:  QT 450, WCB, 304, and 316 L.
• Nominal Pressure: 0.1 MPa to 2.5 MPa.

Application areas: food, chemical, petroleum, electric power and other industries

What are the advantages of the pneumatic butterfly valve ?

• Rapid Response

It uses a pneumatic actuator to control the opening and closing of the valve, allowing for quick response and enabling rapid changes in fluid flow.

• Space Savings

The pneumatic butterfly valve has a relatively small size and compact structure, saving installation space, making it easier to install and maintain in confined areas.

• Low Pressure Loss

The internal structure  is simple, with relatively straight internal flow paths, resulting in lower resistance when fluid passes through, thus reducing pressure loss in the piping system.

• Strong Corrosion Resistance

Drako typically makes the valve body and seat  from corrosion-resistant materials. These materials include stainless steel, duplex steel, and aluminum bronze. They provide high resistance to corrosive media.

• Good Adjustability

It allows for adjustment of the valve opening. This is done by regulating the pressure of the air supply. It offers a wide adjustment range and high precision. This capability meets various flow control requirements.

For more information or technical inquiries, please feel free to contact us. We are happy to assist you.