This is a refrigerant receiver tank that can be used with multiple refrigerants. It has a design pressure of 500 p.s.i. It comes with mounting bolt and nut. 1/4" o.d. solder type copper inlet line and 1/4" i.d. solder type copper outlet line. It also includes a 3 position valve with service port for attaching gauges. It was removed from a brand new Copeland 1/2 HP unit. No refrigerant has been introduced to the tank, only dry nitrogen.