MSA® Bayonet to Portwest® Bayonet Adapter [PROOF OF CONCEPT ONLY]

This proof of concept design for a MSA® to Portwest® bayonet to bayonet adapter as requested recently by Daramcgrath. I do not have either MSA® or Portwest® respirators or filters and used community based models for MSA® to design the female side threads, and used scaled pictures online of Portwest® bayonet to approximate bayonet dimensions. Will need support from 3D printing community in UK and Europe to prototype this and comment on fitment in order to revise dimensions.

Part Description:

MSA_Bayonet_to_Portwest_Bayonet_Proof_of_Concept_Only.stl

Initial model with rough Portwest® bayonet geometry from scaled images alone.

Disclaimers/Risks:

1.) This is a proof of concept only – model in work.

2.) Requires gasket or o-ring on the underside bayonet to ensure proper seal maintained between cartridge and threads.

3.) 3D printing materials are not resistant to many solvents, are water soluble, and degrade when exposed to chemicals. 3D printing this adapter is only a temporarily ad-hoc solution against biological threats. Once supply chain return to normal users should purchase OEM OSHA/NIOSH/EN standard approved adapters and respirator accessories.

Dev. Notes:

04/08/2020 – Initial model release. In work, pending support and feedback from UK and European 3D printing community for any fitment and model revisions. I do not have Portwest® respirators or filters to check measurements.