| 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 | |
