Product Name: atmospheric manhole

Atmospheric manholes are the most common manholes, usually installed at the top of the tank. They are the entrances and exits for the workers in the construction of tanks, cans and tanks. The strength and sealing of manholes are the key techniques.

Atmospheric pressure manhole manhole is installed in the tank safety emergency ventilation device on the top, usually associated with mechanical breathing valve, which can avoid the accident caused by tank sharp overpressure or vacuum, damaged tanks and accidents, have to play safe fire, is a safety device for protecting storage tank, in particular the atmospheric tank cap with nitrogen in the storage of materials. With constant pressure discharge, constant pressure suction, open close flexibility, advantages of safe fire retardant, good sealing performance, safety and reliability etc.. Atmospheric manholes are also the most common manholes.