The gas valves Stiefel manufactures have bodies made of 316 stainless steel. Their PTFE seals ensure safety, reliability, and operational efficiency in corrosive environments. Their body also has double block and bleed configuration which allows for guarding shutoff stream both pre and post maintenance on live gas lines. The wrought iron divirters for biogas plants built for industrial burners underwent automated helium leak testing purely by latching magnets which held the valves position. The test yielded 98% results against the standard model methane bleed.