Brass 1/4″ Male Flare with 1/2″ Female UNF Adapter

The MSA-45 is used on the new R410 Mini Split systems that have the larger unique fitting on the service valve. The description of that fitting is 1/4″ Male Flare x 1/2″ Female UNF. This adapter will screw onto the 1/2″. Acme Male-20 UNF fitting and allow you to connect a standard 1/4″ service hose to it.