Up to now, underground hydrants have mainly been coated with 2 coating systems, inside enamelled and outside epoxy. The seams of the two coating systems and the resulting defects were unavoidable. The new VAG standard is a complete epoxy powder coating (EPP). It eliminates seams between 2 coating systems and thus provides even better protection against corrosion. For standpost hydrants, the upper column outside is provided with an additional UV protection made of red-coloured polyester material on the outside.
Recently, VAG handed over valves and dismantling joints to the mechanical laboratory of the Offenburg University of Applied Sciences where they will be used as training and demonstration materials in the university’s courses.