全天候防火呼吸阀(QZF-89型)
QZF-89 Type Weather Breathing valve
主要用途:Main uses:
该阀是安装在固定顶罐上的通风装置,起减少油品蒸发损耗,控制储罐压力及阻止外界火焰传入的作用。
The valve is installed in the fixed roof tank ventilation, reduce the evaporation loss, control the tank pressure and prevent external flame spread.
主要特点:Main features:
该阀具有通风量大,泄漏量小,耐腐蚀等特点,并有静电接地线,使该阀与罐体保持等电位。该阀具有防冻性能,适用于冰冷地区。
The valve has a large amount of ventilation, a small amount of leakage, corrosion resistance and other characteristics, and static grounding wire, so that the valve and the tank to keep other potential. The valve has a freezing resistance, suitable for cold area.
主要技术参数:Main technical parameters:
操作压力:Operating pressure:
正压:+353pa(+36mmH2O) +980pa(+100mmH2O)
负压:-295pa(-30mmH2O)