butterfly valve / air-fuel ratio control / for gas
ELEKTROGAS VRA-VLA-VTA Elettromeccanica Delta S.p.A.


  • Type:


  • Function:

    air-fuel ratio control

  • Media:

    for gas

  • Temperature:


  • Pressure:

    Max.: 200 mbar (2.9 psi)

    Min.: 0 mbar (0 psi)

  • DN:

    Max.: 80 mm

    Min.: 40 mm


The VRA/VLA/VTA valves are manufactured by Delta, and are types of solenoid valves for combustion air regulation. When the coil is not energized, the spring works it on the disc, keeping the minimum passage of air adjusted. When the coil is working, the valves opens and the disc moves to the maximum open position. The valve moves to the minimum position when the power is off.

This type of device is useful for high and low stage control of combustion air in industrial gas burners. The operating pressure is 200 mbar and the media temperature can reach up to the maximum of 60°C.