DIN Standards Committee Optics and Precision Mechanics
Respiratory protective devices - Performance requirements - Part 3: Thread connection
Abstract
This part of ISO 17420 is applicable to an unassisted filtering device and specifies a standard thread connection between a filter and the respiratory interface as required in ISO 17420-2. This part of ISO 17420 also includes the description of test simulators that are necessary for the assessment of some of the requirements.
Begin
2025-12-11
WI
00079192
Planned document number
prEN ISO 17420-3
Responsible national committee
NA 027-02-04 AA - Occupational respiratory protective devices
Responsible european committee
CEN/TC 79 - Respiratory protective devices
previous edition(s)
Respiratory protective devices - Threads for facepieces - Part 1: Standard thread connection
2018-12
