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  • Elektrogas Control Valves VRA VLA VTA

    VRA VLA VTA
    Solenoid valves for combustion air regulation


    The VRA/VLA/VTA types are normally closed solenoid valves for cold combustion air regulation. When the coil is not energized the spring works on the disc, keeping the adjusted minimum passage of air. When powering the coil the valve opens, moving the disc to the maximum open position. When power is switched off the valve moves to the minimum position.
    This type of device is suitable for high/low stage control of combustion air in industrial gas burners. (qualified for continuous service- 100% ED).
    Material/Connections
    AlSi
    Rp3/4 … Rp2½
    AlSi
    DN40 … DN80
    Operating pressure
    0 … 200 mbar
    Media temperature
    Cold air 60°C max.
    Settings

    High/Low stage operation
    VRA: 1s opening/closing
    VLA: ~4s opening/1s closing
    VTA: ~4s opening/closing
    Bypass bore (optional)
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