Air Breathing Hose

A flexible, tubular item of odorless light wall construction. It must have single or multiple layers of nonmetallic material, but may contain metal wire reinforcement, foil type liner, and/or woven or braided cover. It is designed to convey under low pressure air or oxygen for breathing purposes. For items with couplings and/or a communication cable, see hose assebmly, air breathing. Excludes hose, nonmetallic.