诺德信止回阀性能规范 Property specifications
● 法兰连接尺寸按ANSI B16.5或JIS2212﹑2214﹑2217。Flange connecting dimensions in accordance with ANSI B16.5 or JIS2212﹑2214﹑2217
● 焊接端连接尺寸按ANSI B16.25。Weld end connecting dimensions in accordance with ANSI B16.25
● 阀体材料 Body material：A105﹑F11﹑F22﹑F304﹑F316﹑F304L﹑F316L
● 密封面型式 Seat sealing：13Cr/13Cr﹑13Cr/STL﹑STL/STL﹑304/304﹑316/316﹑304/STL﹑316/STL、316L/316L等
