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DEFRENIT
Industrial piping for the food industry

Hygienic piping for food and beverage plants.

Stainless steel lines that can be cleaned without residues: no dead legs, smooth internal welds and routing designed for cleaning. For production, filling and cleaning systems in north-western Switzerland.

Industries · Food

What food plants get from us

01

Product lines for liquid and pasty foods, beverages, dairy products, flavourings.

02

CIP lines for cleaning and disinfection, with a fall and without dead legs.

03

Utility lines for steam, hot and cold water, compressed air, CO₂ and nitrogen.

04

Stainless steel equipment

work tables, racks, pipe supports, platforms.

05

Modification and extension for new products or additional lines.

Stainless steel lines without dead legs

Hygienic design in practice

We work with stainless steel 1.4301 (304) and 1.4404 (316L). Product lines are welded by the TIG or orbital process with root shielding, so that the inside stays smooth and no heat tint forms. Connections to your standard: welded, clamp, dairy coupling or flange.

When routing, we pay attention to a fall for drainage, short branches without dead legs, accessible cleaning points and pipe supports that do not form dirt traps. After welding, the welds are pickled and passivated on request.

Step by step

How we work

  1. Step 01

    Clarification

    product, cleaning concept, hygiene zone, connection system.

  2. Step 02

    Design

    isometrics with falls and drain points.

  3. Step 03

    Prefabrication in Pratteln

    welding, testing and pickling the spools.

  4. Step 04

    Installation

    during production breaks or company holidays, in coordination with your production.

  5. Step 05

    Testing and handover

    leak test, documentation as agreed.

FAQ

Frequently asked questions

Which stainless steel do you recommend for food?

For most foods 1.4301 (304); for products containing salt or acid and for cleaning media 1.4404 (316L). The choice depends on the product and the cleaning concept.

How do you avoid dead legs?

Through short branches, valves directly on the main pipe, a fall for complete drainage and a design that makes every point of the line reachable for CIP.

Can you work during company holidays or at night?

Yes. We plan modifications in food plants for production breaks, company holidays or weekends, so that production is not interrupted.

Do you also supply stainless steel tables and racks?

Yes. Our metalwork shop fabricates work tables, racks, pipe supports and platforms in stainless steel, welded for easy cleaning.
Contact

Let's talk about your project.

Hohenrainstrasse 10b, 4133 Pratteln · Mon–Fri 07:00–12:00 and 13:00–16:00