This rail plug valve features track-driven sliding sealing structure with minimal friction between sealing surfaces. Equipped with DBB double block and bleed function, it provides reliable isolation. Full bore design allows pigging operation; optional metal-to-metal sealing adapts to complex working conditions. It is widely used in petroleum, aviation fuel, natural gas and chemical pipeline systems.

The plug valve relies on a rotatable tapered or cylindrical plug with a through hole to realize opening and closing. It features simple structure, rapid operation and good tightness. Various sealing configurations including soft seal and metal-to-metal seal are available. It can be designed as full bore or reduced bore, widely used to cut off or divert media in petroleum, chemical, natural gas and urban pipeline systems.