Midget air midget mixer

MM and EMM are suction type proportional air-gas mixers. The quantity of gas entrained is easily set by the adjuster plug in the gas throttle orifice. Once set, the fuel to air ratio remains constant over a wide range of air flows. A zero regulator can be used to maintain a constant gas pressure, precisely at atmospheric pressure, for all gas flows. The pressure of the mixture delivered to the burner system and therefore the capacity is controlled by a single valve in the combustion air line.