Bolt/welded connection valve cover, reduced diameter and full diameter
The end connection is socket welding, threaded welding, or butt welding, designed according to API602 and ASME16.34
Product drawing

Product dimensions
| DN | NPS | Ød | L | H | Port size |
| 15 | 1/2" | 10.5 | 79 | 63 | SW NPT Rc |
| 20 | 3/4" | 13 | 92 | 65 | |
| 25 | 1" | 18 | 111 | 80 | |
| 32 | 1 1/4" | 24 | 120 | 90 | |
| 40 | 1 1/2" | 29 | 120 | 101 | |
| 50 | 2" | 36.5 | 140 | 120 |
Technical Documentation
1.设计与制造:API602;ASME B16.34;JB/T7746;GB/T12224
2.结构长度:JB/T7746或客户需求
3.承插端size:ASME B16.11;JB/T7746(SW)
对焊端size:ASME B16.25;JB/T7746(BW)
螺纹端size:ASME B1.20.1(NPT);GB/T7306(Rc)
4.检验与试验:API598;JB/T9092;GB/T26480
5.结构特征:B·B(中部bolt)W·B(中部焊接)流量:Full diameter(FP)Shrinking diameter(RP)
6.主体material:A105N,LF2,LF3,F11,F5,F22,F304,F304L.F316,F316L,F321H,F51,F53,F55,F91,F92,F347,310S,800H,600,625特殊material等
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