Review on PIONEER Air Conditioner Ductless Charging by Erik Haynes

Mini split vacuum charge adapter with no port / 16" SAE service ports. Attach this adapter using knurled pliers to tighten to to prevent leakage, but do not overtighten ie hand tightening may cause leakage and others, as well as use a set of manifolds or other gauges Before using this adapter, verify that you have a Schrader valve depressor was factory installed on the female end as some of them seem to come without them making it unusable. It worked as intended - hence the 5 star rating. Customer photos show the adapter in action. See the comments for a step-by-step guide -Step description of cleaning the system with a vacuum cleaner.