3M Speedglas Adflo Unit – 837731 3M Speedglas Adflo Unit – 837731 has a self-adjusting breathing tube with QRS (Quick Release Swivel), airflow indicator, prefilter, spark arrestor, particle filter, heavy-duty battery, belt and charger (gas filters are sold separately 837242 or 837542). This respirator connects directly with any Speedglas Series respiratory welding helmet and can protect users against particles and gases depending on the filter used. An odour filter (837110) is available separately for working environments with unpleasant smells.
The standard battery fully charges in about 5.5 hours depending on residual capacity. The system has an expected operating time of 10 to 13 hours when used with a new particle filter, a new fully-charged battery and at a standard airflow rate. The airflow is always at a constant nominal rate of 170 litres per minute, regardless of battery charge or particle loading, and can be easily adjusted to suit the user’s needs. For hotter, more humid working environments, the airflow rate can be increased to 200 litres per minute for optimum user comfort. The Li-ion battery makes the turbo unit almost 20 % lighter in weight, providing better balance and added user comfort for the duration of a shift. The heavy-duty battery is recommended when using the respirator with a gas filter, and in some configurations, it is also required to use a breathing tube with a silencer (834009). Always verify approved combinations with your Safety Engineer or contact a certified Industrial Hygienist for advice.
