大型的阀门和重要阀门采用这种阴极保护法，是一种经济简便又行之有效的方法。
Large valves and important cathodic protection method using this valve is an economical and easy and effective way.
在1988年7月6号，作为日常保养的一部分，技术人员检查阀门的安全，这在预防液态气体的危险中尤为重要。
On July 6, 1988, as part of routine maintenance, technicians removed and checked safety valves which were essential in preventing dangerous build-up of liquid gas.
对于室内安装，重要的是要使得阀门易于进行测试和维修。不要安装在一个隐蔽的位置。
For indoor installations, it is important that the valve be easily accessible to facilitate testing and servicing. Do not install in a concealed location.
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