乱人伦中文字幕-日本乱理伦片在线观看中文-色94色欧美sute亚洲线路二-久久成人亚洲香蕉草草-成人免费毛片网站-午夜亚洲国产-а天堂中文在线官网-麻豆人人妻人人妻人人片av-欧美亚洲精品真实在线-在线不卡国产-欧美精品网站-成人久久免费网站-911精品国产一区二区在线-成人做受视频试看120秒-91黄色看片

This is a safety valve.It is installed in liquid phase and gas phase pipeline of LPG storage and filling station, and used with air compressor (or gas storage tank), so that in case of a large number of pipeline leakage, the gas source pressure relief or high temperature will melt the alloy of fusible plug, and the valve will automatically close and stop leakage, playing a role of safety protection.The valve can also be used as a pneumatic globe valve.Can realize remote control, close quickly, open flexible.

Product Model: QDQ421F-25/40
Nominal diameter: DN25~200 mm
Nominal Pressure: PN2.5~4.0MPa, JIS-10K, 20K
Applicable Temperature: -40~+80 ℃
Applicable media: liquefied gas, natural gas
Air supply interface: PC1/4
High-temperature dissolution and closure temperature: 70±5℃