3M 446870 Fresh-air gas supply system 9002V automatic darkening welding mask

3M 446870 Fresh-air air supply system 9002V auto-darkening welding mask
3M Fresh-air C system specification
passed the respiratory protection certification
European EN 270 and Australia/New Zealand AS/NZS 1716
designated protection factor: APF=25
Air flow: 140- 300 liters/minute
pressure requirement: 4-10 bar
compressed air quality: need to comply with prEN 12021 standard
weight
9002V mask: 750g
air flow regulator: 380g
face noise: less than 80dB(A)
belt: leather, length 76- 133 cm
pipeline
breathing tube: comply with EN270
Connector: quick connector CEJN 342
Use and storage environment
Use: -5-50
storage: -20-50