Düker GmbH & Co. KGaA is a company with a tradition of a smeltery and hammer mill. Today there are five divisions: fittings and valves, drainage technology, glasslining technology, engineering and jobbing foundry. 

With cast iron products, Düker is one of the leading manufacturers of valves and pressure fittings for the drinking water and gas supply as well as of pipes and fittings for the drainage systems.

Eisenwerke Fried. Wilk. Düker GmbH & Co.