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 in male flare x 1/2 in female UNF. This adapter will screw onto the 1/2 in. Acme male 20 UNF fitting and allow you to connect a standard 1/4 in service hose to it.
DiversiTech® Adapter, Male Flared x Female UNF Connection, 1/4 x 1/2 in Nominal, Brass, For Use With: Model R-410A Mini-Split Systems
Connection Type | : | Male Flared x Female UNF |
Nominal Size | : | 1/4 x 1/2 in |
Material | : | Brass |
Suitable For Use With | : | Model R-410A Mini-Split Systems |