The 4in., 6in. and 8in. barrels are the most common for Praxair′ s HP/HVOF ® equipment. Application, powder type, and spray parameters determine barrel selection.

HVOF Spares

The coaxial stabilizer assembly (P/N 600392) is the most critical part of the 5220 Gun. Fuel is atomized into fine droplets by the oxygen in the coaxial stabilizer.

Praxair′ s coaxial stabilizer is manufactured, assembled, and tested at our facility. The tests are performed on a calibrated JP-5000® system to internal specifications

The coaxial stabilizer assembly includes the main stabilizer body, adaptors, fittings, check valves, coaxial tube assembly and spark plug assembly

Test requirements on the coaxial stabilizer assembly include a check and pass process at given flows on a calibrated console:

Check: Pass:

• Pop-Back • No Pop-Back

• 0 2 Back Pressure • Pressure Valves Remain Constant

• Combustion Back Pressure • Stable Flame

• Fuel Pressure • Smooth, Consistent Starts

The combustion pressure heat tube assembly (P/N 600464) is a component for the 5220 gun connecting the combustion line to the coaxial stabilizer. If extreme heat passes through the the stabilizer into the combustion line, this assembly reduces the temperature, prolonging the life of other components. Praxair′ s combustion pressure heat tube assembly is manufactured to the latest revision level available exclusively from Praxair.