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).


AlSi Rp3/4 … Rp2½
AlSi DN40 … DN80

Operating pressure

0 … 200 mbar

Media temperature

Cold air 60°C max.


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


Technical Sheet Download File
Declaration Of Conformity Download File
RT Russian Certification Download File