DUKER 305 Operating Instructions Manual - Page 4

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assume any liability for damage resulting from corrosion caused by aggressive media. Neglect of these

regulations may result in imminent danger to life and health, and may cause damage to the pipeline.



The valve must be professionally installed into the pipeline.



Following EN 1074-1, the maximum flow velocity may not surpass 4 m/s in continuous

operation.



Operating conditions such as vibrations, water impact, erosion, cavitation and major

proportions of solid matter in the medium - especially of an abrasive nature – must be

clarified with the manufacturer prior to commissioning.

2.3. Special risks

Be sure to free the pipeline from any pressure and risk prior to disassembly, maintenance and repair of

the valve. During disassembly the medium may leak, therefore the pipeline and the valve must be

completely emptied.

The energy supply must be switched off.

For valves that are used as end valves, the free connection must be shut off or the valve locked securely

in the position "shut". Danger of Crushing!

All valves must be carefully transported and stored.

The valves are fully enamelled or powder-coated. The coatings are shock-sensitive and must be

protected against impact stress.

The gaskets are sensitive to light: Unpackaged valves may only be exposed to bright daylight

or ultraviolet light for a very short time. This is why the openings are sealed with protective caps. Valves

must be stored in darkened rooms, in their original packaging with the protective caps.

In the event of storage over an extended period of time, the storage location should be frost-protected,

cool, dry, dark and free of dust. Alternatively, the valves may also be packed in order to fulfill these

conditions.

The valve should be stored on a pallet or similar support and only transported with suitable

tools such as wide straps to its designated point of installation. Do not use chains!

01/042017

Düker GmbH, www.dueker.de