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    Stainless Steel Trieccentric pneumatic actuator Butterfly Valves

    A three eccentric butterfly valve is characterized by the stem axis deviating from both the disc center and the body center simultaneously, with the rotation axis of the valve seat set at a specific angle to the channel axis of the valve body.

    The DELCO DK67-WB-G Series butterfly valve features a triple offset design. This design offers the advantages of being lightweight, compact, and cost-effective, with low operating torque. It can effectively replace traditional gate valves, globe valves, and ball valves in most industrial applications.

    Model: DK67-WB-G
    Size Range: 2”~18”
    Pressure Range: 1.0MPa to 2.5MPa
    Material: Stainless Steel

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      DELCO Trieccentric Butterfly Valve with pneumatic actuator

      The three eccentric butterfly valve is widely used in industries such as metallurgy, electric power, petrochemicals, water supply and drainage, and municipal construction, where the medium temperature is ≤ 425°C. It features a double security structure, with the tritec design standard meeting API609, BS5155, ANSI B 16.34, and ASME SEC VIII standards. This valve is suitable for regulating flow and breaking fluid, and is available in materials including cast iron, cast steel, and stainless steel.

      The valve’s non-blind area design ensures minimal friction between the butterfly plate and valve seat. It has a thin layer valve seat structure with a replaceable seal pair and a balanced fixed structure. The body seat construction involves installing the valve seat directly on the body.

      Technical Parameters of Valve Actuator

      Double actingAir to open, air to close, air supplier failure to keep the current position
      Single acting N/CAir to open, interrupt air to close, air failure to close
      Single acting N/OAir to close, interrupt air to open, air failure to open
      Optional accessoryReversing solenoid valve, limit switch box, air filter reducing valve, positioner, handle manual, lock up valve.
      Pneumatic Actuator

      Technical Parameters of Valve Body

      Body Valve components
      Size range DN50~DN400 Sealing material PTFE
      Body material Cast Iron, WCB Core material Stainless steel
      End conection Wafer, Flange Stem material Stainless steel
      Operating pressure 1.0, 1.6MPa Applicable media Water, oil, Gas, Liquid, steam, powder, anti-corrosive base
      Structure Midline Structure/ A-type
      Actuator

      Air source processor: Combines filtering, pressure reduction, and lubrication functions, ensuring stable outlet pressure. Available in two-piece assemblies for filtering compressed instrument air and three-piece configurations for added lubrication.

      Pneumatic solenoid valve: Regulates the opening and closing of pneumatic valves by magnetizing and demagnetizing to direct gas flow based on voltage signals. Offers precise control over valve operations, commonly used for managing gas source and circuit flow.

      Limit switch: Detects valve status and outputs signals for open or closed positions. Critical in automatic control systems, confirming and executing subsequent programs, providing valve interlock protection, and indicating remote alarms within the system.

      Valve positioner: Crucial for precise control over valve positioning in pneumatic control valves, comparing valve stem displacement and controller output signals, adjusting the actuator output signal accordingly.

      Manual device: Complements pneumatic actuator assemblies, facilitating manual or pneumatic operation for butterfly and ball valves with a 90° opening. Ensures versatility and flexibility in valve operation, allowing for manual and automated control as needed.

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