Do you need a face shield for brazing?

Per Miller’s own owner’s manual (OM-288359A), the Miller Face Shield PAPR is explicitly intended for “Chipping, Grinding, Wire-Brushing, and Similar Activities” as well as “Welding, Cutting, Brazing, and Soldering Activities Requiring Lens Shade No. 5 Or Less” — so brazing is a listed use case for this particular NIOSH-approved (TC-21C-1198) powered air respirator, with lens options of Clear, Shade 3, or Shade 5 depending on the task.

Whether you personally need a face shield for a given brazing job depends on your process, materials and workplace risk assessment, which this record can’t determine for you. What we can say from the manufacturer’s own documentation: if you are using this system, Miller rates it appropriate for brazing only up to Shade 5 — for anything requiring a darker lens, or any other respiratory/eye protection question specific to your task, follow your employer’s risk assessment and the approval label on your equipment rather than assuming this or any other product is suitable.