Manhole covers | manhole cover tank clamp

Manhole cover is installed on top of the tank, with anti-people tipping, emergency proof and other functions, with built-in breathing valve, when the tank pressure is higher than the external pressure, will automatically adjust the pressure so that the oil transportation safer environment for shipment of gasoline, kerosene, diesel and other light oil. Standard size 560 580 460 emergency opening pressure 21KPa ~ 32KPa maximum emergency exhaust flow 7000m3 / h (at 34KPa when) the main material of aluminum alloy, carbon steel, aluminum stamping (optional) Installation flange, clamp temperature range - 20 ~ + HC001 manhole flange connection with the use of 70 ℃ cover, made from sheet roll is made, materials are aluminum, carbon steel, stainless steel choose not hunting. The overall height of the mounting flange can be set according to user needs production. http://www.lj-valve.cn/