Special gas range Biogas range
Safety solenoid valves, single-stage Pressure switches
Differential pressure switches High-pressure switches

TÜV Standard for Biogas Components
The Octagon approval mark of TÜV SÜD applies to media- or flue-gascharged components of fuel ducts and gas equipment (e.g. valves according to EN 161, pressure switches according to DIN EN 1854) of biogas installations operated with biogases and sewage gases according to DVGW worksheet G 262.

Certification
The gas equipment safety and functional safety is proven by inspection and certification of the components on the basis of test standards for gas equipment parts.

Approvals 
The appliances of the DUNGS biogas and special gas range have an EC type-examination certificate according to the EC gas appliances directive and EC pressure equipment directive based on the corresponding harmonised EN standards.