Forced and Self-Lapping Disc Valve (Everlasting type) Port : Full bore / Reduced boreSize : 2″ – 12″ (DN50 – DN300)Class : ANSI 150-600Lbs, JIS, DIN Disc type : Single disc, Double disc Sealing materials : Ceramic, Sintered Tungsten Carbide, WC Coating, Stellite Overlay, Sintered TC+CVD (Hv2200) Leakage : Class V by ANSI B16.104 (Option: VI) Application : Polysilicon, glass, steel powder, mining in abrasive and erosive media etc. Linear or swing motion is operated.