3M Supplied air respirators require a source of clean breathing air such as plant air systems or bottled air. This clean, breathable air can be delivered to hoods, helmets, full facepieces, half facepieces and loose fitting facepieces. Supplied air respirators offer many features over traditional respiratory protection, such as cooling or heating incoming air; fit testing only required for tight fitting facepieces; and low maintenance. Complete systems include a supplied air hose, an air regulating valve, a breathing tube, and a helmet, hood, or other facepiece. Potential benefits include:
A cost effective way to provide a high level of respiratory protection
3M’s range of supplied air valves can cool or heat air by up to 50°F (28°C)
No filters, cartridges, or batteries to maintain
Supplied air provides no additional breathing resistance to the wearer

The vortex assembly can cool compressed air by as much as 50°F (28°C). It can operate on pressures ranging from 60 90 psig, depending on hose length. Assembly includes:
Cooling tube with quick disconnect fitting
Waist belt
Holder