方泰鍛鋼截止閥有三種體蓋連接設計形式，種是體改螺栓連接，按這種連接設計形式設計的閥門，其閥體與閥蓋用螺栓連接，纏繞式墊片密封，優點是便于維修。第二種是體蓋焊接連接，按這種連接形式設計的閥門，其閥體與閥蓋全焊密封，優點是無外泄漏。第三種是壓力自緊式閥蓋，按這種連接設計形式設計的閥站，其閥體與閥蓋用螺紋連接，內壓自密封環密封，優點是內部壓力越大，其密封性能越好。

Taitong forged steel globe valve has three types of bonnet.One is bolted,which the body is connected with bonnet by bolts and sealed by spiral gasket with advantanges of conveient maintenance;one is welded bonnet,which the body is fully welded with sealing bonnet of no leakege;another is pressure-in bonnet,which the body is screwed into the bonnet and seled by inner pressure-in ring with better sealing ability for higher pressure

設計結構與特征
1、設計制造：按ANSI B16.34;API602;BS5352
2、連接端尺寸：1）承插孔尺寸按ANSI B16.11;JIS B2306  2)螺紋端尺寸按ANSI B1.20.1 BS21;ISO7/1;JIS B0203
3、閥門檢驗和試驗：按API598
4、材料：按AISI/ASTM的規定
5、主體材料：A105;F5;F11;F22;304;304L;316;316L;LF2...
6、標記按MSS-SP-25

Design sturcture and feature
1.Design and manufacture:ANSI B16.11;API602;BS5352
2.Ends connection:1)SW dimension:ANSI B16.11;JIS B2306  2)Screwed dimension:ANSI B1.20.1 BS21;ISO7/1;JIS B0203
3.Valve inspection and test:API 598
4.Material according to AISI/ASTM
5.Body material:A105;F5;F11;F22;304;304L;316;316L;LF2...
6.Mark:MSS-SP-25

結構和特征
1、全徑或縮徑
2、明桿支架式
3、自定心壓板壓套式
4、螺栓連接、全焊密封連接以及內壓自緊式連接閥蓋
5、整體式上密封座
6.閥瓣可變換為節流型、針型、球型 和止回型

Structure and feature
1.Full bore or reduced bore
2.Outside screwed and yoke
3.Bushing type
4.Bolted,fully welded and pressure-in bonnet
5.Integral backseat
6.Disc changeable for choke type,needle type,ball type and check valve