| bb os & y型结构 | | 制造标准：gb12235 | 结构长度：gb12221 | | 对焊口标准：gb12224 | 试验标准：gb13927 | | bb os & y structure | | manufacture：gb12235 | face to face：gb12221 | | butt-welding：gb12224 | test：gb13927 | | 公称压力
(nominal pressure) | 1.6mpa | 2.5mpa | 4.0mpa | | 密封试验(seal test) | 1.8mpa | 2.8mpa | 4.4mpa | | 壳体强度(shell) | 2.4mpa | 3.6mpa | 6.0mpa | | 适用温度
(suitabletemprature) | 300℃ | |
特点(features)：
| 双层波纹管(double walls bellow seal) | 维修方便(maintenance-free) | | 波纹管密封阀杆(spindle with bellow seal) | 双重密封(secondary sealing) | | 位置指示(position indicator) | 无升降手轮(non-rising handwheel) | |
用途(se-lection of possible applications)：
| 工业(industry) | 电站(power station) | | 废气净化厂(flue gas puerification plant) | 天然气(gas supply) | | 真空装置(vacuum facilities) | 氨(ammonia) | | 热水(hot water) | 冷冻系统(cllling&freezing systme) | | 加热设备(heating technology) | 蒸汽系统(steam system) | | 零件名称
parta name | 阀体 body | 阀盖 bonnet | 阀杆 stem | 闸板 disc | 密封面
sealing face | 填料 paking | | wcb | wcb | wcb | 13cr | 2cr13 | 2cr13 | 柔性石墨
graphite | | stl | | 304 | cf8 | cf8 | 304 | 304 | 304 | 柔性石墨
graphite | | stl | ptfe | | 316 | cf8m | cf8m | 316 | 316 | 316 | 柔性石墨
graphite | | stl | ptfe | | 304l | cf3 | cf3 | 316 | 304l | 304l | 柔性石墨
graphite | | stl | ptfe | | 316l | cf3m | cf3m | 316 | 316l | 316l | 柔性石墨
graphite | | stl | ptfe | |
外形尺寸各连接尺寸 external and connection dimensions：
| pn | dn | l | l1 | d | d1 | d2 | b | f | f | d6 | n-ф | △h
(strode) | | 1.6 | 15 | 130 | 80 | 95 | 65 | 45 | 14 | 2 | - | - | 4-14 | 13 | | 20 | 150 | 90 | 105 | 75 | 55 | 14 | 2 | - | - | 4-14 | 17 | | 25 | 160 | 110 | 115 | 85 | 65 | 14 | 2 | - | - | 4-14 | 22 | | 32 | 180 | 127 | 135 | 100 | 78 | 16 | 2 | - | - | 4-18 | 29 | | 40 | 200 | 156 | 145 | 110 | 85 | 16 | 3 | - | - | 4-18 | 34 | | 50 | 230 | 170 | 160 | 125 | 100 | 16 | 3 | - | - | 4-18 | 43 | | 65 | 290 | - | 180 | 145 | 120 | 18 | 3 | - | - | 4-18 | 50 | | 80 | 310 | - | 195 | 160 | 135 | 20 | 3 | - | - | 8-18 | 58 | | 100 | 350 | - | 215 | 180 | 155 | 20 | 3 | - | - | 8-18 | 78 | | 125 | 400 | - | 245 | 210 | 185 | 22 | 3 | - | - | 8-18 | 105 | | 150 | 480 | - | 280 | 240 | 210 | 24 | 3 | - | - | 8-23 | 112 | | 200 | 600 | - | 335 | 295 | 265 | 26 | 3 | - | - | 12-23 | 150 | | 2.5 | 15 | 130 | 80 | 95 | 65 | 45 | 16 | 2 | - | - | 4-14 | 13 | | 20 | 150 | 90 | 105 | 75 | 55 | 16 | 2 | - | - | 4-14 | 17 | | 25 | 160 | 110 | 115 | 85 | 65 | 16 | 2 | - | - | 4-14 | 22 | | 32 | 180 | 127 | 135 | 100 | 78 | 18 | 2 | - | - | 4-18 | 29 | | 40 | 200 | 156 | 145 | 110 | 85 | 18 | 3 | - | - | 4-18 | 34 | | 50 | 230 | 170 | 160 | 125 | 100 | 20 | 3 | - | - | 4-18 | 43 | | 65 | 290 | - | 180 | 145 | 120 | 22 | 3 | - | - | 8-18 | 50 | | 80 | 310 | - | 195 | 160 | 135 | 22 | 3 | - | - | 8-18 | 58 | | 100 | 350 | - | 230 | 190 | 160 | 24 | 3 | - | - | 8-23 | 78 | | 125 | 400 | - | 270 | 220 | 188 | 28 | 3 | - | - | 8-25 | 105 | | 150 | 480 | - | 300 | 250 | 218 | 30 | 3 | - | - | 8-25 | 112 | | 200 | 600 | - | 360 | 310 | 278 | 34 | 3 | - | - | 12-25 | 150 | | 4.0 | 15 | 130 | 80 | 95 | 65 | 45 | 16 | 2 | 4 | 40 | 4-14 | 13 | | 20 | 150 | 90 | 105 | 75 | 55 | 16 | 2 | 4 | 51 | 4-14 | 17 | | 25 | 160 | 110 | 115 | 85 | 65 | 16 | 2 | 4 | 58 | 4-14 | 22 | | 32 | 180 | 127 | 135 | 100 | 78 | 18 | 2 | 4 | 66 | 4-18 | 29 | | 40 | 200 | 156 | 145 | 110 | 85 | 18 | 3 | 4 | 76 | 4-18 | 34 | | 50 | 230 | 170 | 160 | 125 | 100 | 20 | 3 | 4 | 88 | 4-18 | 43 | | 65 | 290 | - | 180 | 145 | 120 | 22 | 3 | 4 | 110 | 8-18 | 50 | | 80 | 310 | - | 195 | 160 | 135 | 22 | 3 | 4 | 121 | 8-18 | 58 | | 100 | 350 | - | 230 | 190 | 160 | 24 | 3 | 4.5 | 150 | 8-23 | 78 | | 125 | 400 | - | 270 | 220 | 188 | 28 | 3 | 4.5 | 176 | 8-25 | 105 | | 150 | 480 | - | 300 | 250 | 218 | 30 | 3 | 4.5 | 204 | 8-25 | 112 | |
