Emergency vent Manhole Cover is a kind of rapid relief-pressure device. Its technical performance, main material and main parts'materialare the same as HXF-HR type breather manholes.
紧急放空人孔是快速泄压装置，其技术性能、主要零部件材料与HXF-HR呼吸人孔相同。
All UL142 tanks supplied by FMC tanks are supplied with the properly sized normal and emergency vent openings to affect the safe venting of tanks in the event of a fire or rapid temperature increase.
FMC罐产品公司供应的所有ul 142双壁罐都配有适当尺寸的正常和紧急通风口，以使罐能够在发生影响或温度上升时安全通风。
All UL142 tanks supplied by FMC tanks are supplied with the properly sized normal and emergency vent openings to affect the safe venting of tanks in the event of a fire or rapid temperature increase.
FMC罐产品公司供应的所有ul 142双壁罐都配有适当尺寸的正常和紧急通风口，以使罐能够在发生影响或温度上升时安全通风。
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