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Converts the 5/16" SAE charging-Vacuum ports to accept 1/4" SAE gauge-hose set
Used on most newer R410A Ductless Mini Split Systems
Brass construction, with full swivel tip.
5/16" Female, 1/4" Male SAE
New R410A Ductless Mini Split Systems are usually equipped with a different charging port size to avoid charging of wrong refrigerant into the system (i.e. R22). This new port size is 5/16" SAE and some gauge sets carry 1/4" SAE connectors. Port adapter converts the 5/16" SAE ports to use with 1/4" SAE gauge sets.