Air Solenoid valves
NC solenoid valve for air control fast/slow opening fast/slow closing
The VRA – VLA – VTA types are normally closed solenoid valves for regulation of cold combustion air.
When the coil is unenergized, the spring pushes on the disk to keep the adjusted minimum air passage. The valve opens when the coil is powered, moving the disc to the maximum open position. The valve moves to the minimum position when the power is off.
This type of device is suitable for high/low stage control of combustion air in industrial gas burners. (qualified for continuous service- 100% ED).
Technical Data
Material/Connections
AlSi Rp3/8 … Rp2½
AlSi DN40 … DN80
Media Temperature
Cold air 60°C max
Operating Pressure
0 … 200 mbar
Setting
High/Low stage operation
VRA: 1s opening/closing
VLA: ~4s opening/1s closing
VTA: ~4s opening/closing
Bypass bore (optional)
Downloads
