Features Not Easy to Leak: This refrigerator check valve has a double seal to ensure no leakage, and the brass filling valve has a sealing cap. Wide Range of Applications: Filling valves are used in various parts of refrigeration, refrigeration and air conditioning equipment. Easy and Storage: Small size, easy to carry and store, easy to use, good performance Easy installation: 100% brand new service access valve is easy to install, no complicated tools are needed, it is a good substitute for damaged or faulty ones, and it brings you more convenience. Excellent After-sales Service: We provide you with high-quality after-sales service. If you have any questions, please feel free to contact us, and we will deal with it for you as soon as possible. Specification: Item Type: Refrigerator Check Valve Product Model: HS--110 Sealing Method: Valve core + rubber ring Pressure Resistance: 4.5MPa Medium Temperature: -25~120℃ Working Pressure: 3.0MPa Copper Tube Diameter: Approx. 6.35mm / 0.3in Body Material: Copper/brass Packing Method: Plug-in packaging Usage: Welding Adapt to Refrigerant: Conventional refrigerant Packing Quantity: 5Pcs/set Copper Tube Length: Approx. 90mm / 3.5in Total Length: Approx. 120mm / 4.7in Package List:  5 x Valve Package List 5 x Valve