Electrohydraulic actuator with gas pressure governor for modulating or stepwise control of gas-fired heat generating equipment that operates with sufficient amounts of excess air,
with motorized setpoint adjuster controlled by an electric three-position controller
with mechanical minimum and maximum pressure limitation
with integrated safety shutoff function to EN 161
optionally with auxiliary switch
Gas pressure governor designed for:
atmospheric burners
stationary direct fired air heaters
industrial furnaces
influencing the air / gas ratio on burners equipped with a direct mechanical link (e.g. in connection with O2 trim control)
The combination of gas pressure governor and valve provides the functions of
gas pressure governor
safety shutoff valve, and
gas volume regulating unit (control valve or damper)
Suitable media, depending on the type of valve used:
Gases of families I, II and III
Biogas
Cold or hot air
Maximum operating pressure
300...1200 mbar (depending on size, refer to VG... valves)