欧美日韩成人在线影院_亚洲免费在线观看中文字幕_麻豆福利夜间视频_成人免费看片又大_中文字幕欧美手机精品_青青在线看片_久久天天躁日日躁狠狠躁_国产一级黄片一区二区三区_撕开奶罩疯狂揉吮奶头_啊快舒服亚洲视频

簡(jiǎn)體中文版 English

Product List

According to the national standard "petrochemical enterprise design fire code" (GB50160-92) provisions: "a, B liquid fixed roof tank, should be equipped with flame arrester and breathing valve". Visible breathing valve, flame arrester is an indispensable safety facilities tank. The utility model not only can maintain the pressure balance of the storage tank, ensure the storage tank is protected from overpressure or vacuum, but also can reduce the volatilization and the loss of the medium in the tank. I produced the valve, with a compact structure, large ventilation, small leakage, good sealing performance and other characteristics.
Mandatory
Mandatory
Mandatory
Mandatory

Be sure to write clearly consulted or purchase products detailed parameters and quantity.