Metal to metal seated plug valves  Features The main advance of metal to metal seated plug valves is rugged design against demanding service conditions like abrasive media (slurry, slag, catalyst, sand loaded crude oil or gas). Even during operation the plug can be lubricated and sealed by injecting special grease using a hand gun.  Designs Top-entry Double flange Buttwelded ends  Materials Carbon steel Stainless steel Titanium Special material  Sealing Metal to metal (true metal seated), lubricated   Nominal diameters DN 15 to DN 750 1/2" to 30"   Pressure stages DIN PN 16 to 420 ANSI Class 150 to 2500 API 2000 to 10000     Temperature ranges -65°C to +350°C     -85°F to +662°F        in Deutsch