Pneumatic Actuated Butterfly Valve

Valvesonly is the best Pneumatic Actuated Butterfly valve manufacturer in USA. A pneumatic actuated butterfly valve is a type of control valve used in various industrial applications to regulate the flow of fluid within a pipeline. This valve is equipped with a pneumatic actuator, which utilizes compressed air or gas to control the opening and closing of the butterfly valve. The design of the valve includes a disc or plate, commonly referred to as the butterfly, which is mounted on a spindle. When the actuator is activated, it causes the disc to rotate, either allowing or restricting the flow of the fluid through the valve.

Key components of a Pneumatic Actuated Butterfly valve include:

  • Body: The valve body is the outer casing that contains the internal components. It is designed to withstand the pressure and temperature of the fluid flowing through the pipeline. Common materials for valve bodies include cast iron, carbon steel, stainless steel, and other alloys.
  • Disc/Butterfly: The disc, often referred to as the butterfly, is a flat or slightly conical plate that is mounted in the center of the valve body. When the valve is open, the disc is positioned parallel to the flow direction, allowing for maximum fluid passage. Conversely, when the valve is closed, the disc is rotated to a perpendicular position, blocking the flow of fluid.
  • Seat: The seat is the sealing surface where the disc comes into contact with the valve body when in the closed position. It ensures a tight seal, preventing leakage when the valve is closed. The seat is typically made of resilient materials such as rubber or PTFE (polytetrafluoroethylene).
  • Actuator: The pneumatic actuator is the component responsible for converting the input signal (compressed air or gas) into mechanical motion to control the position of the disc. There are different types of pneumatic actuators, such as diaphragm actuators, piston actuators, and rack-and-pinion actuators. The choice of actuator depends on factors like valve size, pressure, and application requirements.
  • Positioner (Optional): In some cases, a positioner may be added to enhance the precision and accuracy of valve positioning. The positioner receives a control signal and adjusts the actuator to achieve the desired valve position, ensuring precise control of fluid flow.

Applications:

  • Water Treatment Plants
  • Chemical Processing
  • Power Generation
  • Oil and Gas Industry
  • Pulp and Paper Industry
  • Mining Operations
  • Automotive Industry

Advantages:

  • Quick and responsive operation
  • Simple and compact design
  • Cost-effective
  • Low maintenance requirements
  • Versatility in applications
  • High flow capacity
  • Bubble-tight shut-off
  • Automation compatibility
  • Corrosion resistance
  • Energy efficiency

Temperature:

  • Standard -4°F to 200°F (-20°C to 93°C)
  • Low -40°F to 176°F (-40°C to 80°C)
  • High 0°F to 300°F (-18°C to 149°C)

Configuration of a Pneumatic Actuator:

  • 4-20 Mamp
  • Pneumatic single acting actuators
  • Pneumatic double acting actuators
  • Pneumatic rotary actuators
  • Pneumatic Scotch and Yoke actuators
  • Pressure: 228 bar

Description:

  • Body: Cast Iron, Cast steel (WCB, WCC, WC6, LCC, LCB), Carbon steel (CF8, CF8M), Titanium, Stainless steel (SS304, SS316, A105, F304, F304L, F316, F316L).
  • Class: 150-2500,
  • PN 10 – PN450.
  • Size: ½” to 48”.
  • Ends: Wafer, flanged, lug
  • Operation: Pneumatic.

 

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