fuel-tank pressure relief valve 燃油箱限压阀
air tank pressure relief valve 储气罐安全阀
fuel tank pressure relief valve 燃油箱限压阀
hydraulic tank breaker relief valve 液压油箱通气孔安全阀
Are cargo tank relief valves set correctly and actual relief valve Settings clearly and visibly displayed?
货舱安全阀的设定位置是否正确，安全阀实际定位的显示是否清楚和直观？
3 SEC The PORV (pressure relief valve) opens automatically, releasing steam into a holding tank.
3秒减压阀自动打开，将蒸汽释入一个储存罐。
Relief valve or vent valves permit a small pressure to be maintained on the vapor over the oil in the tank (except when the tank is being emptied).
卸压阀或通气阀使罐内油面上方的蒸汽保持微正压(油罐正在排空时除外)。
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