Withstand High Pressure: Discover the unparalleled durability of the refrigerant recovery tank! Pre-filled with a trace mount of nitrogen to guard against corrosion, it has undergone rigorous pressure tests and boasts a working pressure of a formidable 400 psi. Enjoy peace of mind with this tank's ability to resist high pressure, ensuring a safe and secure refrigerant recovery experience. Strong Compatibility: The built-in 1/4' SAE interface valve can be adapted to fit most hose sizes, thanks to the inclusion of 2 1/4' SAE to 1/2' ACME brass adapters. Perfect for use with old household air conditioners, the tight connection at the interface minimizes the risk of leakage. Explosion-proof & Non-leakage: Featuring an integral forming brass Y-valve with strong sealing capabilities, it can efficiently recover and discharge both liquid and steam. And, with the included pressure relief valve, you never have to worry about high pressure