Modular range of supplied air respirators you can custom build for your system 3M Versaflo Cooling Regulator V-100E: Individually cool your incoming supplied air down by 28 C. Ideal for workers exposed to warm temperatures in addition to requiring protection against particulates, gases and vapours or combination hazards 3M Versaflo Heating Regulator V-200E: Individually warm up your incoming supplied air by up to 28 C. Ideal for workers exposed to low temperatures in addition to requiring protection against particulates, gases and vapours or combination hazards 3M Versaflo Regulator V-500E: Balanced regulator designed for respirator use. Ideal for workers requiring spray gun or compressed air tool ports in addition to requiring protection against particulates, gases and vapours or combination hazards Supplied air regulators dont offer protection in confined spaces, oxygen deficient atmospheres or for asbestos stripping Integrated warning whistle that indicates low air flow Suggested