• - Your Best Manufacturer Pneumatic Butterfly Valve -

    ● Rack and pinion pneumatic actuator with reliable performance

    ● Easy to change or install the springs to ensure the output torque

    ● Available in single acting(spring return) and double acting actuator for your projects

    ● Anti-Corrosion actuator for outdoor uses

    ● Large size range for choice(2″, 2 1/2″, 3″, 4″, 5″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″, 24″)

    ● 1 million cycle times

covna plastic pneumatic actuator butterfly valve

HK59D-P Plastic Pneumatic Actuator Butterfly Valve

HK59D-P Plastic Butterfly Valve With Pneumatic Actuator available in spring return & double acting rack & pinion pneumatic actuator. High speed, safe & low cost. Made by PVC material with features of lightweight. Wafer quick connection and easy to install.

covna wafer pneumatic butterfly valve

HK59-D Wafer Butterfly Valve With Pneumatic Actuator

HK59-D Wafer Butterfly Valve With Pneumatic Actuator available in stainless steel & cast iron material for your choice. General used for water, oil, air, steam, etc. Applied in water treatment, HVAC, and other industries. Responsive, large flow rates and multi-control methods. 4 versions of seals: NBR, EPDM, VITON and PTFE to meet your medium requirements.

covna lugged butterfly valve with pneumatic actuator

HK59D-M Lugged Type Butterfly Valve With Pneumatic Actuator

HK59D-M Lugged Type Butterfly Valve With Pneumatic Actuator available in stainless steel and cast iron material. Applied in large size pipeline system and connected stronger. High flows & long service life. 4 versions of standard: ANSI, JIS, DIN, GB standard.

covna food safe pneumatic butterfly valve

HK59D-W Food Safe Pneumatic Actuator Butterfly Valve

HK59D-W Tri-Clamp Butterfly Valve With Rack & Pinion Pneumatic Actuator available in single acting & double acting for milk, drinks, food, water. Easy connection, high flows, 1 million lifetimes. Offering food grade solutions for food and beverage, medical industry and other industry.

HK59D-F Pneumatic Flanged Butterfly Valve

Manufacturing pneumatic flanged butterfly valve in soft seal type and hard seal type to meet different requirements. Available in CF8, CF8M and WCB material. Widely used in FGD industry, wastewater treatment, etc.

HK59D-G Pneumatic Triple Offset Butterfly Valve

Manufacturing pneumatic triple offset butterfly valve in wafer connection or flanged connection for your choice to meet your different requirements. Widely used in high temperature and high-pressure industries.

COVNA also manufactures all kinds of pneumatic accessories for you to allow your automation control process easier


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What Is Pneumatic Butterfly Valve?

  • Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is a pneumatic actuator valve that uses a circular butterfly plate that rotates with the stem to achieve activation. It is mainly used as a cut-off valve. It can also be designed to have the function of adjustment or segment and adjustment.
  • According to the type of actuator, it can be divided into: Single-acting pneumatic butterfly valve and Double-acting pneumatic butterfly valve
  • According to the material of the butterfly valve, it can be divided into: Stainless steel pneumatic butterfly valve, Plastic pneumatic butterfly valve and Cast iron pneumatic butterfly valve。
  • According to the connection mode of the butterfly valve, it can be divided into: Wafer pneumatic butterfly valve, Flange pneumatic butterfly valve, Tri-clamp pneumatic butterfly valve and Lug pneumatic butterfly valve
  • According to the seals of the butterfly valve, it can be divided into: Soft sealing pneumatic butterfly valve and Hard sealing pneumatic butterfly valve
  • According to the structure of the butterfly valve, it can be divided into: Single eccentric pneumatic butterfly valve, Double eccentric pneumatic butterfly valve and Triple eccentric pneumatic butterfly valve
  • According to the function of the butterfly valve, it can be divided into: Normal temperature and pressure pneumatic butterfly valve, High temperature pneumatic butterfly valve and Sanitary pneumatic butterfly valve

Advantages and Disadvantages of Pneumatic Butterfly Valve

Advantages Of Pneumatic Butterfly Valve:

  • Small and light, easy to disassemble and repair, and can be installed in any position
  • The structure is simple and compact, the operating torque is small, and the 90° turn to open quickly
  • The flow characteristics tend to be straight, and the regulation performance is good
  • The seal can be replaced, and the seal is reliable to achieve two-way sealing
  • 1 million cycle times

Disadvantages Of Pneumatic Butterfly Valve:

  • Need to match the air source equipment, and have requirements for the air supply pressure

Selection Guide of Pneumatic Butterfly Valve

  • Confirm what types of butterfly valve you need like connection type, valve material, seal material, size, etc
  • Confirm what pneumatic actuator you need. Such as single-acting actuator or double acting actuator
  • Confirm the air supply pressure
  • Confirm the medium, working temperature, working pressure, etc

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