SR307 Connection Assembly The SR 307 compressed air attachment is simple to fit to
SundstrÃ¶m half masks and full face masks. The air flow rate can
be controlled by means of the regulating valve on the userâ€™s
belt to a value between about 150 and 320 l/min. The supply
pressure to the regulating valve should be between 4 and 6 bar.
A flow meter and a warning whistle for temporary and continuous
monitoring of the air flow are included