2021年最新无码国产在线视频_欧美日韩在线免费观看_96在线看片免费视频国产_日本强伦姧人妻69影院_午夜福利视频无码一二三_日韩女主播福利视频_欧美亚洲麻豆二区_成人激情影院在线观看_女邻居的大乳中文字幕_2020年最新国产精品正在播放

HXF-1 Explosion-proof Pipe Breathing Valve overview

1 , Pipeline fire and explosion proof breathing valve is installed in the fixed top-type storage tank ventilation device, play a reduction of oil evaporation loss, control of tank pressure, prevent the introduction of outside flame, to avoid fire protection tank farm production safety.

2, the valve is suitable for storage of less than 28 ℃ or less than 60 ℃ flash point, A, B oil or other chemical materials, its reasonable structure, light weight; flame retardant lateral installation with a convenient inspection and disassembly Features. Body material or other specifications are not listed in the table can be made according to user requirements.

3, operating pressure: 

Positive pressure: A 353Pa (36mm water column) ;
Class B 980.7Pa 100mm water column; 
negative pressure : 294.2Pa 30mm water column or specified by user requirements selected.