Kromschröder's VAD, VAG, VAH and VAV are industrial pressure regulators combined with solenoid valves used for the safe and efficient control of gas flows in industrial burner applications.

• VAD (Pressure regulator with solenoid valve)

  • Regulates gas pressure depending on combustion air flow
  • Ensures a constant air-gas ratio



• VAG (Equal pressure regulator with solenoid valve)

  • Mechanically controlled gas valve to shut off and stabilize a gas-to-air pressure ratio of 1:1 for modulating controlled burners or with bypass valve for multi-stage controlled burners
  • Often used in conjunction with a combustion air valve



• VAH (volume flow controller with solenoid valve)

  • Electromagnetic shut-off valve that supplies or shuts off the gas
  • To stabilize a gas-to-air ratio for modulating and stage-controlled burners. The gas volume flow rate is controlled proportionally to the air volume flow rate



• VAV (Ratio pressure controller with solenoid valve)

  • Modulating gas valve for precise control of gas flow rate.
  • For shutting off and stabilizing a gas-to-air pressure ratio for modulating controlled burners. The gas-air transfer ratio is adjustable from 0.6:1 to 3:1. Via the firebox control pressure psc, pressure fluctuations in the firebox can be corrected.

• Available sizes: 1 to 3
• Nominal diameters (DN): 15 to 65
• Connections: threaded or flange
• Operating modes: fast opening and closing
• Mains voltages: 24 V DC, 120 V AC or 230 V AC
• IP 65
• Max. 500 mbar incoming pressure
• EU certified
• Class A pressure regulator according to EN 88 and Class A solenoid valve according to EN 161
• Suitable for hydrogen