PAPR adapter: Adflo/Versaflo to Honeywell/North

thingiverse

This adapter connects the hose from a 3M Adflo or Versaflo PAPR into the input air port of the Honeywell Primair Universal Bibbed Hood Assembly. Airgas Part #:HONPA111. Version 1 has a looser fitting lock ring to Honeywell input, while Version 2 lock ring tabs create a snug fit with Honeywell connection. Chamfers added to the underside print orientation prevent stringing when printing. Optimized for FFF printing. Version 3 is optimized for resin 3D printing: increased clearance between parts prevents unintentional fusing. Use Version 2 for FFF printing. The inner tube connector uses a ~32mm OD o-ring gasket (1-25mm ID) to seal the connection, available at most auto parts and hardware stores. Mine was from O-Reilly, o-ring item number 214. Printed with 0.28mm layer height on Ender 3 printer without supports. Fusion 360 project viewer and download link: https://a360.co/3apHt9p 214 National Nitrile O-ring from O'Reilly Auto parts: https://www.oreillyauto.com/detail/b/national-o-rings-4439/hardware---fasteners-16585/o-rings-25101/o-ring---sae-17539/f3cefbd937b6/national-o-ring/214/4535490 This is not an approved medical device and has not been rigorously tested. Further testing may be needed. Use this at your own risk and discretion, in accordance with FDA policy. See the document for COVID-19 guidance: "Enforcement Policy for Face Masks and Respirators During the Coronavirus Disease (COVID-19) Public Health Emergency Guidance for Industry and Food and Drug Administration Staff": https://www.fda.gov/media/136449/download