bolt/welding connection valve cover，150LB-600LBShrinking diameter，900LB-1500LBFull diameter， rising stem support(OS&Y)
The end connection is socket welding or threaded or butt welding, designed according toBS5352，ASME16.34
Product drawing
Product dimensions
| 150LB RF |
| NPS（英寸） | Ød | L | H(open) | ØW | A | B | C | T | F | n-Ø |
| 1/2″ | 10.5 | 108 | 158 | 100 | 35 | 60.5 | 90 | 11.6 | 2 | 4-16 |
| 3/4″ | 13 | 117 | 160 | 100 | 43 | 70 | 100 | 13.2 | 2 | 4-16 |
| 1″ | 17.5 | 127 | 198 | 125 | 51 | 79.5 | 110 | 14.7 | 2 | 4-16 |
| 1 1/4″ | 24 | 140 | 226 | 160 | 63.5 | 89 | 115 | 16 | 2 | 4-16 |
| 1 1/2″ | 29 | 165 | 246 | 160 | 73 | 98.5 | 125 | 17.5 | 2 | 4-16 |
| 2″ | 36.5 | 203 | 290 | 180 | 92 | 120.5 | 150 | 19.5 | 2 | 4-19 |
| 300LB RF |
| NPS（英寸） | Ød | L | H(open) | ØW | A | B | C | T | F | n-Ø |
| 1/2″ | 10.5 | 152 | 170 | 100 | 35 | 66.5 | 95 | 14.7 | 2 | 4-16 |
| 3/4″ | 13 | 178 | 172 | 100 | 43 | 82.5 | 115 | 16.3 | 2 | 4-19 |
| 1″ | 17.5 | 203 | 206 | 125 | 51 | 89 | 125 | 17.9 | 2 | 4-19 |
| 1 1/4″ | 24 | 216 | 230 | 160 | 63.5 | 98.5 | 135 | 19.5 | 2 | 4-19 |
| 1 1/2″ | 29 | 229 | 262 | 160 | 73 | 114.5 | 155 | 21.1 | 2 | 4-22 |
| 2″ | 36.5 | 267 | 296 | 180 | 92 | 127 | 165 | 22.7 | 2 | 8-19 |
| 600LB RF |
| NPS（英寸） | Ød | L | H(open) | ØW | A | B | C | T | F | n-Ø |
| 1/2″ | 10.5 | 165 | 170 | 100 | 35 | 66.5 | 95 | 21.3 | 7 | 4-16 |
| 3/4″ | 13 | 190 | 172 | 100 | 43 | 82.5 | 115 | 23 | 7 | 4-19 |
| 1″ | 17.5 | 216 | 206 | 125 | 51 | 89 | 125 | 24.5 | 7 | 4-19 |
| 1 1/4″ | 24 | 229 | 230 | 160 | 63.5 | 98.5 | 135 | 27.7 | 7 | 4-19 |
| 1 1/2″ | 29 | 241 | 262 | 160 | 73 | 114.5 | 155 | 29.3 | 7 | 4-22 |
| 2″ | 36.5 | 292 | 296 | 180 | 92 | 127 | 165 | 32.4 | 7 | 8-19 |
| 900LB/1500LB RF |
| NPS（英寸） | Ød | L | H(open) | ØW | A | B | C | T | F | n-Ø |
| 1/2″ | 10.5 | 216 | 206 | 125 | 35 | 82.5 | 120 | 29.5 | 7 | 4-22 |
| 3/4″ | 13 | 229 | 206 | 125 | 43 | 89 | 130 | 32.5 | 7 | 4-22 |
| 1″ | 17.5 | 254 | 230 | 160 | 51 | 101.5 | 150 | 36 | 7 | 4-26 |
| 1 1/4″ | 24 | 279 | 262 | 160 | 63.5 | 111 | 160 | 36 | 7 | 4-26 |
| 1 1/2″ | 29 | 305 | 296 | 180 | 73 | 124 | 180 | 39 | 7 | 4-29 |
| 2″ | 36.5 | 368 | 345 | 250 | 92 | 165 | 215 | 45.5 | 7 | 8-26 |
Technical Documentation
1.设计与制造:API602;ASME B16.34
2.结构长度:ASME B16.34
3.法兰端size：ASME B16.5(RF，FM，RJ)
4.检验与试验:API598
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
