Threaded valve is a kind of valve installed with internal and external threaded connection, widely used in a variety of working conditions and environments, such as water supply and drainage, HVAC, chemical industry, machinery manufacturing and household piping systems. The valve is suitable for water, gas, oil and slightly corrosive media, with good sealing performance and corrosion resistance. Threaded valve structure is compact, easy and quick installation, without welding or flange connection, especially suitable for small diameter pipeline use. The products are characterized by flexible opening and closing, small flow resistance, reliable sealing, etc. They support manual operation and partially automated control methods. Its advantages include simple maintenance, long service life, good pressure resistance, suitable for low and medium pressure systems. Threaded valves can not only realize the rapid cut-off and connection of the medium, but also meet the diversified flow regulation needs, is the ideal valve choice for industrial and civil pipeline systems in the economy, high efficiency and reliability.