FRO FLUX VAPORIZER is suitable for medium temperature brazing of steels, copper and their alloys. Combustible gas is enriched by gaseous deoxidiser and transferred to the workpiece by the flame.

The equipment should be fitted to the acetylene (or propane)piping between the pressure regulator and the torch, taking care ensure the correct gas passage direction, which is indicated by an arrow marked on the body of the valve. Provide the outlet connection with a safety device against backfire C. Place the vaporizer in a ventilated area, far away from heat sources and/or flashes. Filling is performed through the special side filling point (f) with the cylinder in vertical position. While filling, valves 1 and 3 should be closed to avoid gas leaks. Refill with deoxidizer up to the hole's upper line, then screw the cap tigthly. The supply of gas enriched with deoxidizer is obtained by closing valve 3 and opening valves 1 and 2. By keeping valves 1 and 2 and opening valve 3 as required, it is possible to dose the amount of deoxidizer supplied with the gas. Greener is the flame's color, larger is the quantity of deoxidizer therein contained. By opening valve 3, you will obtain gas supply only, without deoxidizer. To avoid internal deposits dangerous for the vaporizer's life and efficiency, it becomes necessary in case of long breaks, to close valve 1 and 3 and open the gas valve on the torch allowing this way the residual vaporized liquid to exhaust, then also valve 3 should be closed. Maintenance is necessary when the vaporizer doesn't supply gas enriched with deoxidiser. In that case, unscrew the valves assembly on the cylinder and clean the internal passages bu means of alcohol or using the deoxidizer liquid itself. Replace the rubber hose when it present internal deposits. Finally, check the internal (v) and external (C) safety valves.