Emerson Thermostats Emerson PG9A41JTL20 Combination PG9 Pilot Burner and 750 mV Generator, 90 Degree Left Porting Pilot generator with 750 mv output for operating gas valves and relays Single blue flame burner for Igniting gas burners Maximum flame stability and quiet operation Flame ring surrounding the generator ensures high output and extended generator life Orifice base fittings (0.020) for natural gas and LP applications