Features 1、With double seal to make sure no leakage, brass filling valve with sealing cap. 2、Filling valves are used in various parts of freezing, refrigerating and air conditioning equipment. 3、The bonnet knurled designed is adopted for easy installation and disassembly. 4、Small size, easy to carry and store, convenient to use and with good performance 5、Using high‑quality materials, strong and durable, has a long service life 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