Orifice screw that can be easily removed for simple cleaning or replacement, extending the life of the tip BTU is 1,280 and the tip size is a 1/4 inch Industrial applications include high capacity and HVAC Gas flow is 3.6 at 14 PSI SCFH and 0.31 (0.9 BAR) M3/HR Soft solder is 1/4 to 1 inch and the silver solder is 1/8 to 1/2 inch