Drinking water industry
Special approvals are also required in the drinking water industry when plastics come into contact with drinking water for a short or a long time. Drinking water approvals are currently still national approvals, as they have not yet been harmonised in Europe or worldwide.
Approvals
Thus, there are different approvals according to
- KTW (Contact with drinking water; Germany),,
- WRAS (Water Regulations Advisory Scheme) and BS6920 (British Standard; Great Britain),
- ACS (Attestation de conformité sanitaire; France),
- NSF61 (National Sanitation Foundation; USA)
and many more. Also here we can confirm that we have gained various approvals for our semi-finished products or raw materials.
The traceability of our semi-finished products to the production processes and the raw materials used is achieved through our internal production batch identification, which is applied to each semi-finished product label. The migration tests are carried out at different temperatures in an accredited testing laboratory in accordance with the rules and regulations detailed above. GEHR offers a large number of different materials from its standard delivery programme and customised solutions programme.
Properties
Approvals ...
according to various drinking water directives
In contact with drinking water, the relevant approval is normally required. Currently, this still depends on the country.
Sliding properties
In order to reduce friction losses as far as possible in food and drinking water processing, mainly materials with good sliding properties are used in this sector.
Chemical resistance
Products in food processing can be acidic, alkaline or neutral. Materials used here must be able to withstand these contacts. Chemicals are also used for cleaning the production systems. Therefore, the machine components must also meet the requirements.
Blue colour for optical detection
Since there are only very few foodstuffs of blue natural colour, plastic components made of blue dyed semi-finished products help with the additional optical detection. Furthermore, this colour offers a good contrast to deposits of harmful substances.
Hot water resistance
In addition to the use of chemicals in the food processing industry, hot water is often used for cleaning. For this reason, the relevant materials must have sufficient resistance against this medium.
Mechanical strength
Polymer materials are often used as substitutes for other materials. Therefore, there are also increased demands on the strength here.
Our Products for the Drinking water industry
You can reach us
Tel: +49 621 87 89 - 0
Fax: +49 621 87 89 – 200
GEHR GmbH
Casterfeldstr. 172
68219 Mannheim
Germany
You’re interested in our materials or you have a question about a particular product?
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or use our contact form.
We will get in touch with you as soon as possible.
Facilities
Our facilities and sales offices you find
here.