After turning off the gas or electricity open the drain valve at the tank bottom.
在关闭燃气或电源后可开启罐底的排水阀。
TANA42F inner assemble safety valve is to be applied to liquefied gas tank lorry in railroad and automobile or ground liquefied gas tank, to provide overpressure protection.
TANA42F内装式安全阀主要用于铁路和汽车石油液气槽车或地面液气储罐上，起超压安全保护作用。
As the leakage of liquefied petroleum gas tank is full tank, the tank pressure to a larger, firefighters tried hard to shut the valve several times.
由于漏气的液化气罐是满罐，罐内压力较大，消防队员试了几次都难以关闭阀门。
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