FORGED STEEL VALVES OIL SERIES Types Globe valves, gate valves, needle valves, check valves Standards/Grades API 602 / A105N , A182 F22, A 182 F 304 (stainless steel), etc. NF M 87-412 / A 48 CP, 10 CD 9-10, Z7 CN 18-10 (stainless steel) Dimensions / Tolerances / Testing (according to Standard) Outside Diameter: DN 10 to ND 50 Classes: 800 to 3500 End connections: Socket welding                         Threaded NPT Bore: Reduced or full Optional Bonnet: Screwed, bolted or welded Equipment: Closure element (various types/grades) Seat (various grades) / Stem (various grades) Certification 3.1 B according to EN 10 204 Applications Transportation of hydrocarbons