Stainless steel manways
are safety emergency ventilation device, which is installed on the top of the storage tank. They are usually used together with fire extinguishers and mechanical breathing valves to avoid accidents caused by accidental overpressure or vacuum in the tank and damage to the storage tank. They also have a function of fire resistance and are really safety devices for protecting the storage tank.
The stainless steel manways are particularly suitable for vaulted atmospheric pressure tanks in which the material is stored with nitrogen. It has the advantages of constant pressure discharge, constant pressure suction, flexible opening and closing, safe fire resistance, compact structure, good sealing performance, safety, and reliability, etc.
Stainless steel manways have been molded usually in diameter 600mm. The center of the manways is generally 750 mm from the floor. It is convenient for workers to enter and exit the tank and ventilate during installation, cleaning, and maintenance.