Resilient Seat Ring Sealed Eccentric Plug Valve is a new structure valve that fills the gap between traditional plunger and ball valves in applications such as large diameter pipelines (DN200 and above) and sludge and water sludge. Due to its excellent sealing performance and corrosion resistance, low opening/closing torque and water flow loss, and long service life, it is used as a regulator or closure application in working situations such as municipal wastewater, industrial wastewater, sludge and clear water.