For the purpose of adjusting the internal pressure during the rise and fall of the internal pressure in the storage tank formula fixed roof, dispensing or eyeball of the contents, occur due to changes in atmospheric pressure and changes in atmospheric temperature and measure the safety of the tank it is a safety device that will be used.
If you want to store the powder and liquid pure water and ultrapure water, chemicals, pharmaceuticals, petroleum products, food, etc., indispensable to pharmaceutical manufacturing and semiconductor industry, in order to prevent the altered they touch the air, tank a method of encapsulating an inert gas is being taken. Gas seal unit, the set pressure has two types intended for nitrogen gas reservoir or the like, to maintain the fine pressure. GU-10：The type of 3/8B caliber, 0.1 ~ 3kPa GU-25：The type of caliber 1B, 0.05 ~ 3kPa
The tank is exposed to flame or fire occurs when the tank around the event, and emergency vent is for emergency venting device for adjusting the pressure generated inside the tank excessive. The standard has been set pressure discharge and 1kPa , other, will be produced in us by specifying the set pressure.