Natural gas burner can make air combust automatically and don't equip with fan, easy to operate. Natural Gas BurnerNatural gas burner can make air combust automatically and don't equip with fan, easy to operate. Specification Model:T3, T4, T7, T10, T15, T30, T60, T100, T160, T220, T300 Technical Data:1.Calorific Value(K Cal/Nm3): 8500~100002.Air pressure(MPa): 0.025~0.063.Flame speed(m/s): 68~85