A Lubricated Plug Valve is a quarter-turn valve designed for on-off and throttling applications. It features a cylindrical or tapered plug with a central passage that aligns with the flow path when open. The valve is lubricated with a special sealant to reduce friction and ensure a tight shutoff, making it ideal for high-pressure and high-temperature applications. These valves are wid... https://www.freture.com/plug-valve-manufacturers/lubricated-plug-valve/