SAE J2197 - Hfc-134a (R-134a) Service Hose Fittings for ...
2011-8-1u2002·u2002It was selected because its unique design would reduce the likelihood of cross-treading service hoses on R-12/R-134a refrigerant storage containers and service equipment. The high low pressure hose in SAE J2196 requires the charge coupling (used to connect service hoses to vehicle access ports) to be an integral part of the hose assembly.
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