Features: 1.Made of corrosion?resistant metal and has a long service life, which can meet your needs well. 2.It does not wear or rust, and has good performance, so you can use it with confidence. 3.Convenient to replace the parts and use a wire brush or abrasive cloth to clean the copper pipe, and fix it on the smoothest part of the copper pipe to ensure sealing. 4.You only need a hexagon wrench (included) to install this part; its compact design only requires a clearance area of ??5.08 cm for installation and use 5.The sealing area of the valve is 50 times that of the O?ring, its sealing force is 180 inches, the pressure test is 250, and the torque test is 500 pounds.Specification:Item Type: Piercing ValveMaterial: MetalPurpose: Air Conditioning Needle Valve