174 Iris Diaphragm Control Valves are in operation at the Waste Water Treatment Backriver in Baltimore, USA. The unique...
12 Iris Diaphragm Control Valves are in operation since 2011 at the Waste Water Treatment Plant in Petersburg, Sanitation...
Precise aeration air control with Egger Iris® valves at the Erdinger Moos Sewage Association The Erdinger Moos Sewage Association...