270408 - Miller 25ft Coiled SAR Breathing Air Hose 3/8 ID

Miller 270408 SAR Coiled Air Hose Overview

The Miller 270408 is a specialized 25-foot coiled air hose designed for use with Supplied Air Respirator (SAR) systems. Engineered to provide a safe and reliable connection between air filtration sources and personal respiratory equipment, this hose is an essential component for welders working in environments requiring Grade D breathing air. The coiled design offers significant advantages in workspace management, allowing the hose to extend fully when needed while retracting to a compact form to prevent tangling and reduce tripping hazards on the shop floor.

Technically, the hose features a 3/8-inch inside diameter (ID), which is optimized to maintain the necessary airflow volume and pressure to the Miller C50 air regulator. It comes pre-fitted with 1/4-inch Industrial Interchange fittings (Male x Female), ensuring a secure and standard connection to compatible BreatheAir Portable Boxes or Panel air filtration systems. It is important to note that per OSHA 29 CFR 1910.134(i)(8), breathing air fittings must be incompatible with outlets for non-respirable work-site air to prevent accidental cross-connection; this hose utilizes Industrial Interchange fittings, but Schrader-style options are available separately if your facility requires distinct differentiation from standard shop air lines.

This hose is sold individually and is intended as a direct replacement or extension for existing Miller SAR setups. Its durable construction ensures longevity even in rigorous industrial settings, providing peace of mind that the operator's breathing air supply is delivered consistently and safely.