The valve can not bear the push , pull and torsion action generated by the heat - expansion and cold - contraction of pipe or other reason 盲板阀不得承受管道热胀冷缩或其他原因发生的外力对其产生推拉、扭曲作用。
Avoid bumping of the valve and transmission device . the valve is in full close in order to avoid damage of disc and driving part 运输时应避免撞击盲板阀及传动装置，阀门应处于全闭位置，以防在运输中密封板和传动部件损坏。
It should be in full close state when long stored . add lubrication to the transmission part and the device should be dampproof and dustproof 盲板阀长期存放时应使设备处于关闭状态，传动部位加润滑油。传动装置作防潮、防尘处理。
The body must be cleaned before installed and there is no dirt and sundries clinging to the body , especially pay attention to the sealing surface and the rubber sealing ring 安装前必须清洁盲板阀内腔，不允许有任何杂物和污垢附着（特别注意密封面、橡胶密封圈的清洁） 。
