We confirm that we have supplied our cell gas filters of types ZFG/ZEFG made of ductile iron for the use of hydrogen several times in recent years. At the present time, we have not received any negative feedback on the reference projects used.
The functional suitability for use with hydrogen has so far been confirmed by our customers.
Our ZFG/ZEFG (ductile iron) and VZF/VZEF (cast aluminum) cell gas filters have been subjected to a hydrogen emission test based on DIN EN ISO 15848 at an independent institute.
The requirements of DIN EN ISO 15848 (max. 50 ppmV leakage of housing seals) were met and even significantly exceeded.
Based on several years of experience in the use of our cell gas filters type ZFG/ZEFG for hydrogen as well as the successful emission test of all types, we rate our type-tested cell gas filters type ZFG/ZEFG and type VZF/VZEF as suitable for use in hydrogen plants.
Upon customer request, we will be pleased to perform an additional leak test with helium.
We would like to point out that the suitability of the application for operation with natural gas-hydrogen mixtures with a hydrogen content of >10 vol-% up to 100% must be determined by a risk assessment of the plant operator prior to commissioning.
