This hose is 50 ft long and has a 3/8 in inner diameter. It's equipped with MPT fittings at both ends and accepts 1/4 in FPT fittings. You may not combine 25 or 50 ft lengths of the 3M™ Supplied Air Hose W-9435. Supplied air respirators require a source of clean breathing air such as plant air systems, low pressure pumps or bottled air. Complete systems include a supplied air hose, an air regulating valve, a breathing tube and a helmet, hood or other face piece. 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 deg F (28 deg C), no filters, cartridges or batteries to maintain, supplied air provides no additional breathing resistance to the wearer.

3M™ Supplied Air Hose is a compressed air hose that delivers breathing air from a source of clean air such as a compressor, pump, or air cylinder. The hoses are available in different lengths and they provide high quality connections to all 3M components. Headgear, breathing tube, air control valve, and compressed air supply hose are requried parts in a NIOSH-approved system.

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