This is specifically designed for connecting to HVAC water equipment, heat pumps, or fan coil hook-up. They are economically priced assemblies with a rubber tube and stainless steel outer reinforcement (ASTM E84-10 fire rating). As with any rubber hose, ongoing maintenance and inspection of assemblies should be performed, as well as a schedule to replace aged assemblies at intervals. These are not recommended for use where maintenance or replacement would be difficult or costly to perform, as failures could result in excessive damage to dwellings or commercial properties. For "longer lasting" assemblies (although at a higher initial cost), consider "all stainless steel" SB321 corrugated metal assemblies in mechanical systems; SB321 corrugated hose assemblies can withstand a greater range of elements, cycles, temperatures, etc. CAUTION: Do NOT overtighten ends and crack nuts or distort seating surfaces; ensure hoses are not twisted or awkwardly routed with tight bends; NL9450/A9450 hoses are NOT for natural gas or propane applications.

Construction: Tube: Black EPDM rubber. Reinforcement & Cover: 304 Grade Stainless Steel exterior braid

Typical Fittings: Factory crimped 300 Stainless Steel Crimp Ferrules and brass stems (refer to assemblies for thread types).

Temperature Range: -40°C (-40°F) to +90°C (194°F)

Detail Comments: CAUTION: Do not over tighten ends as it can result in cracked nuts or distort seating surfaces; ensure hoses are not twisted or awkwardly routed with tight bends; NL9450/A9450 hoses are NOT for natural gas or propane applications.