Installed on a by-pass line, mainline pressure is accurately controlled by relief of excess pressure.
安装一条旁路管线，通过释放过大的压力实现主管线压力的精确控制。
Therefore each line or line section shall have an expansion chamber a pressure relief valve or rupture disc discharging to a receiver.
各管路或管段应配备膨胀室，减压阀或将压力释放到储气罐的爆破隔膜。
Therefore each line or line section shall have an expansion chamber a pressure relief valve or rupture disc discharging to a receiver.
各管路或管段应配备膨胀室，减压阀或将压力释放到储气罐的爆破隔膜。
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