【High Precision Thread】The port of the check valve is carefully designed with precision internal threads, which is easy to install and connect. Large-caliber connection means higher working efficiency, greater flow, and compact and valve body structure 【Long Service Life】Our check valve is made of stainless steel, which is strong and durable, not easy to corrode, high compressive strength and long service life which Can work normally under high pressure 【Corrosion Resistant Valve】Our external thread check valve is suitable for the transportation of various fluid media, such as water, steam, oil, nitric acid, urea and other media. Our brass valve has a great advantage when transporting these media 【Principle of Operation】The Non Return connectors are respectively for tube connecting, mainly used for the one-way of the medium in the pipeline, which only allows the medium to in to prevent the medium from backflow 【Application】The large-caliber, large-flow check valve can be used in fluid systems to prevent fluid backflow, or in pneumatic systems to prevent compressed air backflow, reducing accidents and ensuring normal work, Manufacturer: Oumefar