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.

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.