安全减压阀要有标示，标明压力释放级别。
Safety relief valves shall be labeled for relief pressure rating.
水要远离通风管道和安全减压装置，因为它们会被冻结的水堵塞。
Keep water away from vent stacks and safety relief devices that can be plugged with frozen water.
它们配备有安全减压阀和破裂盘，以保护钢瓶，防止过多的压力积累。
They come equipped with safety relief valves and rupture disks to protect the cylinders from excessive pressure build-up.
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