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Mastercool 46721 Blue 72" Nylon Barrier Hose with Automatic Shut-Off Valve Fittings (1/4" SAE) - With a working pressure of 800 PSI and a burst pressure of 4,000 PSI and standard 1/4" fittings. Mastercool uses only (GRADE 5 HOSE) with a selection of Standard and Nylon Barrier for high pressure applications. Knurled brass nuts make finger tightening easy. Crimped with 8 segment dies for secure fit and maximum durability. Hoses are available in sets and a variety of lengths to meet all EPA, SAE, and UL requirements for containment of refrigerant. Auto shut-off valves automatically retain refrigerant in the service hose when they are removed from the system, meet EPA, SAE, and UL standards for containment of refrigerant.
