SIGMATWIN Double Wall Plate Heat Exchangers

Product catalog summary

Introduction
The SIGMATWIN double-wall plate is designed to enhance security in production processes, specifically for heat exchanger plates used as safety plates.

Construction and Functional Concept

The SIGMATWIN consists of a pair of SIGMA plates molded together and inserted into each other.
Sealing is achieved at the four holes using either laser-weldings or flat ring gaskets.
In the event of a plate crack, leakage is directed into the gap between the plates and then outside, preventing contamination of the media/products involved in heat transfer.
These heat exchangers can be opened for inspection or maintenance like standard plate heat exchangers, allowing for revision of the gasketed double-wall plate gaps.

Available SIGMATWIN Plates

Models: M 7 DW, M 9 DW, 26 DW, 37 DW, 66 DW
Applicable for volume flow rates up to 320 m³/h.
Plate thickness options: 2 x 0.3 mm or 2 x 0.4 mm.

Applications

Chemical industry: secondary circuits, safety systems, reactor coolant systems.
Pharmaceutical industry: buffer tanks, infusion and injection solutions.
Oil cooling: compressors, hydraulic systems, turbine cooling.
Ultrapure water applications: semiconductor industry.
Food and beverage industry: edible oil, mineral water, dairy.

Materials

Stainless steel 1.4404 and other materials.
Elastomer gaskets: NBR, EPDM, Viton (FDA-compliant).

Catalog excerpts

SIGMATWIN DOUBLE-WALL PLATE

Open the catalog to page 1

SIGMATWIN – Enhanced security in production processes. with internal gaskets with laser-weldings We designed the SIGMATWIN double-wall plate to achieve the specific demands for a heat exchanger plate as a safety plate. Construction and functional concept  Instead of a single SIGMA plate we apply a SIGMATWIN plate pair, which has been moulded together and put into each other. The sealing of the gap is realised only in the section of the four holes either with laser-weldings or with flat ring gaskets. In case of a plate crack the leakage at first escapes into the gap between the two plates and...

Open the catalog to page 2