球阀,蝶阀,截止阀,气动球阀,气动角座阀

在截止阀基础标准、截止阀编制方法标准和截止阀产品标准，采用了大量国际和国外先进标准，提高了我国阀门标准技术水平

截止阀设计标准积极贯彻了阀门行业这一政策，在截止阀基础标准、截止阀编制方法标准和截止阀产品标准，采用了大量国际和国外先进标准，提高了我国阀门标准技术水平；将我国阀门标准融入国际标准中，争取国际标准的话语权和主导权。

截止阀种类                          截止阀结构形式                                        采用设计标准 
                                                                                                                   GB/T 12235-2007API 6D
                                                                                                                   ASME B16.34-2004
                                                                                                                    BS 5160-1989
                               1、流道：角式、直通、直流（Y型）三种            BS 1873-1999
                               2、阀体与阀盖的连接：法兰                                   MSS-SP-42-1999
铸钢截止阀          3、连接端：法兰或对焊                                           JPI-7S-46-1999
                               4、可以采用多种型式的阀瓣，常规为明杆           JIS B2071-1999
                               结构，少数口径较小的截止阀采用暗杆                 JIS B2072-1999
                               结构                                                                             JIS B2081-1999
                                                                                                                    JIS B2082-1999 
                                1、流道 
                                JB/T 7746-1995：缩孔
                                BS5352-1999：通孔或缩孔                                    （class150～800）；
                                通孔（class1500）                                                     JB/T 7746-1995
                                JPI-7S-36-1999：通孔                                               BS 5352-1999
锻钢截止阀            2、阀体和阀盖的连接：法兰、螺纹或焊接           JPI-7S-36-1999
                                3、连接端
                                JB/T 7746-1995：内螺纹、承插焊或法兰
                                BS5362-1999：内螺纹、承插、法兰和对焊
                                JPI-7S-36-1999：内螺纹、承插 
                
                 
压力自密封           1、流道：缩孔
锻钢截止阀           2、阀体与阀盖的连接：内压自封式
                               3、连接端：对焊、法兰或承插                                  ASME B16.34-2004 

                                1、流道：角式、直通、直流（Y型）三种
                                2、阀体与阀盖的连接：法兰
波纹管密                3、连接端：法兰或对焊                                             ASME B16.34-2004
封截止阀                4、可以采用多种型式的阀瓣，通常为明杆
                                ，也有少数口径较小的阀门采用暗杆
                                5、波纹管和填料双重阀杆密封  

                                 1、流道：角式
                                 2、阀体与阀盖的连接：螺纹、卡箍或焊接
                                 3、可采用多种型式的阀瓣，对于超高压阀
角式高压截止阀     门，通常采用内压自平衡的阀瓣
                                  4、阀体可采用整体式，两件式                               GB/T 12235-2007
                                  5、连接端：法兰或对焊                                           ASME B16.34-2004
衬里截止阀              1、流道：角式、直通、直流（Y型）三种
                                  2、阀体与阀盖的连接：法兰
                                  3、连接端：法兰或对焊
                                  4、衬里材料为橡胶、塑料等                                  ASME B16.34-2004 

双向三通截止阀      1、流道：双向三通流道
                                  2、阀体与阀盖的连接：法兰
                                  3、连接端：法兰或对焊                                          ASME B16.34-2004

放料阀                      1、流道：直通式
                                  2、连接端：法兰
                                  3、阀瓣：上展式或下展式
                                  4、阀体与阀盖的连接：法兰                                   ASME B16.34-2004 

三通截止阀              1、流道：三通
                                  2、连接端：法兰
                                  3、阀瓣：平面密封                                                    ASME B16.34-2004 

水封截止阀              1、流道：直流                                                            GB/T 12235-2007
                                  2、连接端：承插焊、对焊                                         ASME B16.34-2004
                                  3、阀体与阀盖：均为锻造，有个铬镍钢或碳钢     E101-1999
                                  4、阀瓣：锥面密封（DN10～25），平面密封      （DN32～200） 

料浆阀                      1、流道：直流
                                  2、连接端：法兰
                                  3、阀体结构：分左右阀体中间
                                        夹阀座，左右阀体用螺栓连接
                                  4、阀体与支架连接：采用螺栓连接
                                  5、阀盖：class150整体锻造，class300、                     GB/T 12235-2007
                                class400分体式，采用支柱连接                                                                

                                 6、阀瓣：锥面密封成平面密封，或节流
                                        式密封面堆焊硬质合金 

角式节流阀              1、流道：直角
                                  2、连接端：法兰
                                  3、阀体与阀盖：为锻造节流型式，套筒
                                        钻孔、活塞在套筒中上下移动起到调
                                        节流量作用
                                  4、阀体、阀盖连接“螺栓连接                                     API 6A-2002 

钛材截止阀              1、流道：直通
                                  2、阀体、阀盖、填料箱、阀瓣、阀杆为钛材
                                  3、阀体、阀盖连接：螺栓连接
                                  4、阀瓣为平面密封                                                       GB/T 12235-2007 

压力表截止阀         1、流道：直流、直角、三通
                                 2、阀体与阀盖的连接：整体锻造或螺纹
                                 3、连接端：外螺纹、卡箍
                                 4、阀瓣：有锥面和平面两种                                       ASME B16.34-2004