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DELCO Cast Iron Pneumatic Double Flange Butterfly Valves

Introducing the DELCO DK67-FB pneumatic butterfly valve, featuring a double-acting standard control mode with an optional single-acting configuration. This valve boasts a robust construction with a choice between cast iron or ductile iron bodies, and optional 304 or 316 stainless steel components. Designed to operate with an input air pressure range of 2.5 to 8 bar, it requires a minimum 2-inch flanged connection. The default seat material is NBR, with options for EPDM or PTFE seats to accommodate various applications including air, water, light oil, fuels, solvents, alcohol, and many acids.

DELCO offers a range of pneumatic actuator butterfly valves in wafer type, lugged type, and flanged configurations. Contact us for more information.

Model: K67-FB
Size Range: 2″ to 20″
Pressure Range: 1.0 to 6.4MPa
Material: Cast Iron, Cast Steel, Ductile Iron, Stainless Steel

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    DELCO Trieccentric Butterfly Valve with pneumatic actuator

    Presenting the DELCO air-actuated butterfly valve, featuring a double flange design and available with either a spring return failsafe or a double-acting air actuator. This valve is ideal for on-off control of water and other media that are compatible with its construction materials.

    Key Features:

    • Long-lasting performance
    • Eco-friendly
    • Easy to install
    • Can be installed or removed without dislocating the pipe system
    • Capable of throttling flow, suitable for large diameters
    • Quarter-turn rotation mechanism
    • Meets GB, ANSI, JIS, and DIN standards
    • Flange end connection type
    • Suitable for various mediums including water, oil, air, and gas

    For further information, please refer to our detailed catalog.

    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

    Disc Material 3.4, 316, 316L, 1.4529, 2507 Acting Model Double Acting/Spring Return
    Air Supply Pressure 2.5 to 8 Bar Certification ISO 9001, CE, TUV, SGS
    Applicable Standard GB, ANSI, JIS,DIN Accessories Positioner,Limit Switch,F.R.L
    Port Size 2″-20″ End Connection Flange
    Operating Pressure 1.0-6.4 MPA Media Water, Oil, Air, Gas etc.
    Body Material: Cast Iron, SS, WCB Working Temperature -30°C to 180°C
    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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