Our High Pressure Airline Hoses are NIOSH approved when used with Allegros Supplied Air Respirators. Constructed from rugged polyvinyl chloride and reinforced with braided polyester yarn. These hoses provide a temperature range from -20 deg F to 150 deg F (-28.8 deg C to 65.5 deg C). Manufactured with brass Hansen quick-connect couplers. Maximum Pressure is 185 psi @ 70 deg F (12.76 bar @ 21.1 deg C).