MSA Medium Advantage 4000 rubber facepiece with polyester head harness, Snap-Tite aluminum quick disconnect and high pressure control valve. High pressure control valve uses 35-40 psig inlet pressure for 8-300 feet of hose.

• Supplies long duration respiratory protection
• Ideal for a wide range of applications including welding, painting and hazardous materials
• Maintains a slight positive pressure of air during both inhalation and exhalation to prevent contaminant seeping
• For use only in non-IDLH environments
• High pressure control valve
• Snap-Tite aluminum quick disconnect