亚洲欧美日韩在线-激情av在线-av在线免费观看网址-久久久久久91-老外毛片-黄色你懂的-久久亚洲精品小早川怜子-意大利性荡欲xxxxxx-国产色一区-国产精品白虎-看一级黄色大片-无码任你躁久久久久久老妇-亚洲av无码专区在线-玖玖热在线视频-天天操天天爽天天干

JAV Jacket Insulation Breathing Valve Overview
JAV Jacket Insulation Breathing Valve produced and sold by Baigang valve group for the installation of crude oil, gasoline, kerosene, light diesel oil, aromatics and other fixed top-type storage tank on the main safety equipment, jacket insulation breathing valve is up Evaporation loss and protection of tank against overpressure or vacuum from damage (jacket insulated breathing valve). Jacket insulation breathing valve is usually used with the flame arrester. Jacket insulation breathing valve, jacket insulation breathing valve.

JAV Jacket Insulation Breathing Valve features
 1, jacket breathing valve material made of cast steel, stainless steel, good corrosion resistance. 
 2, the valve plate, valve ring stainless steel, PTFE material. Low temperature, antifreeze performance is good. 
 3, the valve is installed on the fixed roof tank ventilation device to reduce evaporation loss of oil, control the pressure of the tank. 
 4, the valve has a large amount of ventilation, leakage, corrosion resistance, antifreeze good. 
 5, It can automatically adjust the internal and external pressure on the oil tank and other characteristics. 
 6, simple structure, light weight, easy maintenance, easy installation. 
 
JAV Jacket Insulation Breathing Valve main dimensions and flange connection size