It is pointed out that the plugging and freezing of breather valve, variation in parameters and operation conditions of oil tank and human factors result in the shrink of oil tank.
指出导致油罐抽瘪的主要原因是呼吸阀堵塞和冻结、油罐参数和工艺条件发生变化以及操作失误等。
The flow control valve is mainly made up of housing, body, sealing shim, liner bushing, valve cartridge, bearing, breather layer, aerator tank and transmission device etc.
流量控制阀主要有机座、阀体、密封垫、衬套、阀芯、轴承、透气层、充气槽及传动装置组成。
Flame Arrestor breather valve should be equipped on the top of tank for type A B liquid according to GB50160-92, "Fire prevention code of petrol chemical enterprise design".
根据国家标准《石油化工企业设计防火规范》（GB50160-92）之规定：“储存甲、乙类液体的固定顶罐，应设阻火器和呼吸阀”。
Hydraulic safety valve series shall be installed on the top the center of the tank, in order to withstand the damage to the tanks caused by operating failure of breather valve.
液压安全阀安装在油罐顶部，与呼吸阀并列使用，在呼吸阀失灵时起安全作用。
For deficiencies of its structure, the previous breather valve with fire protection is not suitable for installing on light oil storage tank at cold area.
原使用的轻质油储罐防火呼吸阀，由于结构缺陷，不宜使用于寒冷地区储油罐上。
For deficiencies of its structure, the previous breather valve with fire protection is not suitable for installing on light oil storage tank at cold area.
原使用的轻质油储罐防火呼吸阀，由于结构缺陷，不宜使用于寒冷地区储油罐上。
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