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    Cast Iron Wafer Butterfly Valves

    DELCO Valve Pneumatic Actuator Cast Iron Wafer Butterfly Valves

    The pneumatic wafer-type butterfly valve is available with a double-acting standard control mode, with a single-acting option also available. It features a body made from either cast iron or ductile iron, with optional 304 or 316 stainless steel. The valve operates with an input air pressure range of 2.5 to 8 bar and has a minimum connection size of 2 inches. It comes with a default NBR seat, but EPDM, PTFE, and VITON seats are also available. This valve is suitable for handling air, water, light oil, fuels, solvents, alcohol, acids, and more.

    Model: DK67-WB
    Size Range: 2″ to 20″
    Pressure Range: 1.0 to 1.6 MPa
    Material: Cast Iron, Cast Steel, Ductile Iron, Stainless Steel 304/316

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      DELCO Cast Iron Pneumatic Actuator Wafer Butterfly Valve

      The pneumatic actuator for the valve is available in both spring return (single-acting) and double-acting configurations, offering high torque up to 4678 Nm. It provides excellent sealing performance and a long service life. The valve comes in a wide size range from 2 inches to 20 inches, ensuring high flow rates while maintaining a low cost and compact design. Both stainless steel and cast iron materials are available to suit different application needs.

      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

      ctuator TypeSpring Return / Double ActingConnectionWafer
      Size RangeDN50-DN600Structure TypeMidline Structure / A Type
      Working Pressure1.0 / 1.6MPa (10 / 16 bar)Body MaterialStainless Steel
      Suitable MediaWater, Liquids, Gas, Oil, Air, Steam, Corrosive Medium, etcTemperature Of Media-10~180℃ (14℉~356℉)
      Disc MaterialAluminum Bronze, Ductile Iron Nickel-LinStem MaterialNickel-plated steel Lin, SS304, SS316, SS416
      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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