Bolt/welded connection valve cover, reduced diameter and full diameter
The end connection is socket welding or threaded or butt welding, designed according toBS5352
Product drawing

Product dimensions
| boltvalve cover800LB | ||||||||||
| NPS | Shrinking diameter(R.P.) | / | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | 3" |
| Full diameter(F.P.) | 1/4" | 3/8" | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | |
| 结构长度/mm | L | 98 | 98 | 98 | 111 | 140 | 140 | 155 | 170 | |
| 中心高度(开)/mm | H | 70 | 70 | 70 | 100 | 110 | 120 | 120 | 150 | |
| 流道孔径/mm | d | 7 | 10 | 13 | 17.5 | 23 | 30 | 35 | 46 | |
| 重量(约)/Kg | 2.2 | 2.2 | 2.1 | 4.2 | 9 | 8.9 | 10 | 18.6 | ||
| 焊接valve cover800LB | ||||||||||
| NPS | Shrinking diameter(R.P.) | / | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | 3" |
| Full diameter(F.P.) | 1/4" | 3/8" | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | |
| 结构长度/mm | L | 79 | 79 | 92 | 100 | 140 | 140 | 155 | 170 | |
| 中心高度(开)/mm | H | 65 | 65 | 65 | 95 | 105 | 110 | 110 | 140 | |
| 流道孔径/mm | d | 7 | 10 | 13 | 17.5 | 23 | 30 | 35 | 46 | |
| 重量(约)/Kg | 1.8 | 1.8 | 2 | 3.5 | 8 | 8 | 12 | 16 | ||
| boltvalve cover900LB-1500LB | ||||||||||
| NPS | Full diameter(F.P.) | 3/8" | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | ||
| 结构长度/mm | L | 98 | 111 | 111 | 140 | 140 | 155 | 170 | ||
| 中心高度(开)/mm | H | 70 | 70 | 100 | 110 | 110 | 120 | 150 | ||
| 流道孔径/mm | d | 9 | 12 | 15 | 20 | 28 | 32 | 40 | ||
| 重量(约)/Kg | 2.1 | 4.2 | 9 | 8.9 | 10 | 18.6 | 20 | |||
| 焊接valve cover900LB-1500LB | ||||||||||
| NPS | Full diameter(F.P.) | 3/8" | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | ||
| 结构长度/mm | L | 92 | 100 | 100 | 140 | 140 | 155 | 170 | ||
| 中心高度(开)/mm | H | 65 | 65 | 65 | 105 | 110 | 110 | 140 | ||
| 流道孔径/mm | d | 9 | 12 | 15 | 20 | 32 | 28 | 40 | ||
| 重量(约)/Kg | 2 | 3.5 | 3.5 | 8 | 12 | 12 | 18 | |||
Technical Documentation
1.设计与制造:BS5352
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/T13927
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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