Msa 455021 Sar Supply Hose Straight High Pressure 25 Ft

Product Description

The MSA 455021 is a straight, high-pressure supplied air respirator (SAR) supply hose designed to deliver breathing-quality air from a remote air source to a respirator facepiece or hood assembly. Measuring 25 feet in overall length with a 3/8-inch inner diameter, this hose is built to handle the demands of high-pressure supplied air systems used in confined space entry, abrasive blasting, spray painting, and other atmospheres that are immediately dangerous to life or health (IDLH). Safety professionals, industrial hygienists, and trained respirator technicians are the typical end users responsible for setup and maintenance of this equipment.

This hose is suited for industrial and commercial environments where workers require a continuous flow of clean breathing air from a compressor or cascade cylinder system. It functions as the air supply line connecting the air source manifold or regulator to the worker's SAR facepiece or belt-mounted breathing tube. The 25-foot length provides meaningful range of movement for tasks that require mobility within a limited work zone, such as tank entry or spray booth operations.

Key Features

• High-pressure hose construction rated for supplied air respirator system service
• Straight hose configuration for consistent airflow and reduced restriction
• 3/8-inch inner diameter supports adequate air volume delivery to the respirator
• 25-foot length provides reach and mobility within confined or restricted work areas
• Compatible with MSA series supplied air respirator systems

Compatibility

Designed for use with MSA series supplied air respirator systems. Verify fitting type and end connections match your specific SAR regulator and facepiece assembly before installation.

Installation Notes

SAR supply hose installation and system setup must be performed by a qualified person trained in respiratory protection programs per OSHA 29 CFR 1910.134 requirements. Before connecting or disconnecting the hose, shut off the air supply and relieve system pressure completely. Inspect the hose for kinks, cracks, or damaged fittings before each use. Do not exceed the rated pressure specifications of the full SAR system, and ensure all connections are fully seated and leak-tested prior to worker entry into hazardous atmospheres.