The coupling, unless not specifically ordered otherwise, is supplied with preservation and can
be stored for up to 3 months.
Note
Information about storing the coupling
● Ensure that the storage room is dry (relative humidity < 65 %) and free of dust.
● Ensure that there is no condensation.
● Do not store the coupling together with corrosive chemicals, acids, caustic solutions, etc.
● If the coupling contains elastomer components, ensure that there are no devices in the
storage room that produce ozone, such as fluorescent lights, mercury vapour lamps or high-
voltage electrical equipment.
● Store the coupling on suitable supports or in suitable containers.
Long-term storage
NOTICE
Property damage due to improper long-term storage
Negative changes to the physical properties of the coupling and/or coupling damage.
● Note the handling instructions for long-term storage.
1. You can find the required type of preservative agent in the following table (types of
preservative agents for long-term storage).
2. Remove the elastomer components. These must not come into contact with cleaning agents
and long-term preservative agents.
3. Clean the coupling parts.
4. Apply the stipulated preservative agent.
5. Store the coupling parts and the elastomer components separately.
Table 4-1 Types of preservative agents for long-term storage
Preservative agents Features Indoor storage Outdoor storage
Oil spray Anti-corrosion agent Up to 12 months Up to 4 months
Tectyl 846 or similar Long-term preservative agent on
wax basis
Up to 36 months Up to 12 months
Emulsion cleaner + VCI foil Active system, reusable Up to 5 years Up to 5 years
Application planning
4.2 Storage of the coupling
N-EUPEX / N-EUPEX DS 3100en
22 Operating Instructions 10/2017
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