This product has been designed according to the KS B 6216 specifications for safety valves used for steam and gas. A balance structured bellows is inserted to ensure there is no effect from the pressure, and the structure ensures the liquid let out does not leak out of the main body. The material of the bellows is SUS316, making it strongly resistant to corrosion. The spring has been manufactured within the range of the maximum effective stress of the material. It has received certification from the Occupational Safety and Health Agency and Korea Gas Safety Corporation. For leakages, the standard of API STD 527 applies.