... VALVES &FITTING 阀及其配件 valve products 阀类产品 VALVES 阀门(用于管道、锅炉、罐桶或类似品的龙头、旋塞、阀门及类似品) ...
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Some units are equipped with valve operators on both ends and with pneumatic resets.
部分装置在两端装有阀操作器，气动操作。
7 hr 30 min Even after operators pump water into the primary loop, pressure is still high. The PORV 'backup valve is opened to lower the pressure.
7小时30分钟尽管操作员已将水抽入主回路，但温度仍然很高。减压阀的备用阀门被打开，减少压力。
In order to strengthens monitoring the boiler safety valve, operators can directly and accurately estimate the act of safety valve, Its necessary to install safety valve alarm and monitoring system.
为了加强对锅炉安全门动作的监视，使运行人员直观、准确地、判断出动作的安全性，加装安全门动作报警监视系统是很有必要的。
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