Research and Certification
Natural Gas
DVGW is a certificate issued by the Deutscher Verein des Gas- und Wasserfaches. It mainly establishes a series of basic standards of physical property, compression set, heat resistance, oil resistance, gas resistance and ozone resistance according to EN549. The compliance testing and evaluation of rubber materials are performed by EBI German Gas Laboratory.
EN 549 is a standard of rubber materials for gas appliances, equipment seals, and diaphragms
*DVGW CERT 100% H2 Pressure range permeate: 250-300mbar, Temperature: 23℃