Air-Gas Ratio Regulators gives constant air gas ratio at all the firing rates. It is used over a wide range of firing rates both in premix and nozzle mix gas burner systems. In case of Premix burners, the vent is open to atmosphere then the regulator can be used as an atmospheric regulator i.e. Zero governor and supplies the gas to the premix burner. In case of nozzle mix burners, the vent of the regulator is cross connected to the main air line downstream of the control valve. In that case, the regulator outlet pressure is equal to air impulse pressure and the gas remains proportional to air flow at all the firing rates. In premix burners and nozzle mix burners, separate regulator for each burner is preferred to avoid interference or interaction.

Air-Gas Ratio Regulators gives constant air gas ratio at all the firing rates. It is used over a wide range of firing rates both in premix and nozzle mix gas burner systems. In case of Premix burners, the vent is open to atmosphere then the regulator can be used as an atmospheric regulator i.e. Zero governor and supplies the gas to the premix burner. In case of nozzle mix burners, the vent of the regulator is cross connected to the main air line downstream of the control valve. In that case, the regulator outlet pressure is equal to air impulse pressure and the gas remains proportional to air flow at all the firing rates. In premix burners and nozzle mix burners, separate regulator for each burner is preferred to avoid interference or interaction.