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covna wafer pneumatic butterfly valve

HK59D Pneumatic Wafer Butterfly Valve

● Nominal size: DN50 to DN600 (2in to 24in)

● Connection: Wafer

● Connection standard options: ANSI, JIS, DIN, GB

● Material options: Stainless steel 304/316/316L or Cast iron

● Sealing options: NBR, EPDM, VITON, PTFE

● Working pressure: 10bar, 16bar, Class 150

● Working temperature: 14℉ to 356℉

covna lugged butterfly valve with pneumatic actuator

HK59DM Pneumatic Lugged Butterfly Valve

● Nominal size: DN50 to DN600 (2in to 24in)

● Connection: Lugged

● Connection standard options: ANSI, JIS, DIN, GB

● Material options: Stainless steel 304/316/316L or Cast iron

● Sealing options: NBR, EPDM, VITON, PTFE

● Working pressure: 10bar, 16bar, Class 150

● Working temperature: 14℉ to 356℉

covna food safe pneumatic butterfly valve

HK59DW Pneumatic Food Safe Butterfly Valve

● Nominal size: 19mm to 102mm

● Connection options: Tri-clamp/Threaded/Welded

● Material options: Stainless steel 304/316/316L

● Sealing options: PTFE, PPL

● Working pressure: 10bar, 16bar

● Working temperature: 14℉ to 356℉

covna plastic pneumatic actuator butterfly valve

HK59DP Pneumatic UPVC Butterfly Valve

● Nominal size: DN50 to DN300 (2in to 12in)

● Connection: Flange

● Material options: UPVC/CPVC/PPH

● Sealing options: EPDM

● Working pressure: 10bar

● Working temperature: 14℉ to 176℉

HK59DF Pneumatic Flanged Butterfly Valve

● Nominal size: DN50 to DN600 (2in to 24in)

● Connection: Flange

● Connection standard options: ANSI, JIS, DIN, GB

● Material options: Stainless steel 304/316/316L or Cast iron

● Sealing options: NBR, EPDM, VITON, PTFE or Metal

● Working pressure: 10bar, 16bar, 40bar, Class 150, Class 300

● Working temperature: 14℉ to 752℉

HK59DG Pneumatic Hard Seal Triple Offset Butterfly Valve

● Nominal size: DN50 to DN600 (2in to 24in)

● Connection: Flange or Wafer

● Connection standard options: ANSI, JIS, DIN, GB

● Material options: Stainless steel 304/316/316L

● Sealing options: Metal

● Max. working pressure: 40bar, Class 300

● Working temperature: 14℉ to 752℉

As an actuator and valve manufacturer, COVNA is committed to offer quality pneumatic actuator for you and help your automation project runs well

AT Series Pneumatic Actuator

Spring return type(single-acting type) quarter-turn pneumatic actuator. Torque range up to 2792Nm

AT Series Pneumatic Actuator

Double Acting type 90 degrees rotations pneumatic actuator. Torque range up to 4678Nm

AW Series Pneumatic Actuator

For larger size valve or valve which requires higher torque. High torque range up to 30860Nm

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

Positioner

Limit Switch

Gearbox

F.R.L

Pneumatic Solenoid Valve

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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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