Used to regulate the flow and cool the compressed air to 3M™ Hoods H-Series and Whitecap™ Helmets. This NIOSH approved assembly helps create more comfortable positive pressure for the user. The vortex assembly can cool compressed air by as much as 50(deg)F (28(deg)C). It can operate on pressures ranging from 60-90 psig, depending on hose length. It includes the cooler with quick disconnect fitting, waist belt and holder.