Certifications > SELO (TSG)


The SELO License (China Special Equipment Licensing Office) is the authorization valid for pressure equipment above 0.5barg placed in the Republic of China.

The TSG - GB/T regulation defines the guidelines for obtaining Chinese certification on safety valves, SELO certification requires quality audits and strict functional tests to be conducted at the Beijing laboratories of the official notified body CSEI (China Special Equipment Inspection and Research Institute).

Nuova General Insturments safety valves are SELO approved for gaseous and steam state.