Düker GmbH

Düker Butterfly Valves - safe, flow-optimised and resistant

Düker butterfly valves are enamelled inside and outside as per the requirements of the DEV guideline and EN ISO 11177.


They can be used both for drinking water and raw water and for all gas types including pressurized air, other media on request.


Düker butterfly valves have a flow-optimised, double-eccentric disc. The connection between the disc and the shaft is through a square plug connection, which ensures a safe and easy operability.


The Düker gears with slidercrank mechanism have proven themselves over years. At a uniform initial revolution speed, the closing speed decreases, so the gear closes softly. This mechanism reduces or eliminates pressure peaks. The gear box is chambered watertight (degree of protection IP 68) and has a mechanical position indication (open/closed).


The drive is possible through hand wheel, electric actuator, stem extension set with or without position indicator, with hydraulic or pneumatic actuators.  

The new type 4510

The new type convinces through the modified shape of the butterfly disc, which has been flow-optimised thanks to simulation software. At present, the new type 4510 is available from DN 100 to DN 600.


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