In this article, the working mechanism, structure and advantages of the mechanical valve automatic control device were introduced.
本文叙述了阀门自动控制装置的工作原理、结构特点以及装置的优点。
Residents are forbidden to use water to wash down paths and pavements, or to use a hose without an automatic shut-off valve.
禁止居民用水清洗道路和人行道，或使用没有自动断阀装置的水龙头。
Each hot water storage heater shall be equipped with an automatic temperature and pressure relief valve to protect the heater from excessive pressure and excessive temperature.
每个容积式热水器都应该配置一个自动温度压力安全阀，保护热水器不会压力太大和温度过高。
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