Resilient renewable Seated,two-way sealing ,zero leakage,long lifetime,heat-resistant,corrosion resistance,well seal performance knife ... slurry, pulp, sewage of solid, liquid-solid, andgas-solid two-phase medium conveying system in the pipeline for switching valves ... industrial steel valves.Our valves are supplied for a broad range of applications in the power generation, chemical andpetrochemical, oil ...