The exhaust valve well 1200* 1200 is square, and 1200 is the side length of the exhaust valve well, so it is square. Purpose of exhaust valve well: v
The exhaust valve well 1200* 1200 is square, and 1200 is the side length of the exhaust valve well, so it is square. Purpose of exhaust valve well: valves for underground pipelines and underground pipelines (such as tap water, oil and natural gas pipelines, etc.). ) are equipped with pits (or wells) similar to small rooms to facilitate the opening and closing operation or maintenance of some pipe networks. The composition and classification of exhaust valve wells include micro exhaust valve, composite exhaust valve and sewage composite exhaust valve.
The connection between the valve shaft and the shaft body and the manhole cover should be reliable, and water should not seep into the well chamber because of heavy rain or accumulated water. The valve well is buried underground, and it has to bear the corrosion and infringement of different pressures and chemicals from all directions. Therefore, it is required to have good bearing capacity and acid and alkali corrosion resistance.