- For gas test stand pipe - A safety component to prevent flashback into the pipework or tank, approved for all explosive gases, including hydrogen - Brass adapter with seals for direct connection to the gas test stand pipe - IBExU 09 ATEX 2019 X, - Explosion group: IIA1, IIA, IIB1, IIB2, IIB3, IIB, IIC - Test standard: DIN EN ISO/IEC 80079-49:2025-01 - ATEX No. / Type: IBExU 20 ATEX 2115 X / DEF