PREMANT district heating pipe

Brugg VISUCON

Brugg VISUCON is a connection technology which is fundamentally different from the processing

of other sleeve systems. VISUCON makes possible visual inspection of the polyurethane foam. This

means it is not necessary to destroy the sleeve or the foam.

With the VISUCON connection sleeve, the annular space for the external foaming process is not

limited by a polyethylene sleeve, but by reusable forming shells. With this technology, the external

sealing connection is not made until after the foaming process is complete. The result and quality of

the polyurethane foam can be reliably tested for every sleeve.

Sleeve system parts:

- Polyurethanefoam,madeofliquidcomponentspolyolandisocyanate(cf.PRE6.410)

- Sealingshrinkfilm

- Sealingtape

- VISUCONsleevebodiesmadeofintegratedshrinkableHDPE

A cylindrical VISUCON shell is used for installation, which is then removed after the polyurethane

foam hardens. The two sealing systems are then installed. Due to the system design, no foaming

holes are necessary, meaning the plug welding process can also be omitted. The VISUCON sleeve

body shrinks across its entire length during installation, whereby the sleeve area does not expand.

This unchanging pipe diameter can be advantageous during pipe installation in empty tubes or

when driving over cable links.

Nominal size

160...710 mm

Length:

780 mm

Brugg VISUCON is only available as a straight connection sleeve. Non-integrated shrink sleeves

should be used for reducing sockets and stop ends.

Polyurethane half shells

The VISUCON connection sleeve can also be used together with the prefabricated polyurethane

half shells. In this case, forming VISUCON shells are not necessary. The remaining installation is

identical.

PRE 6.345

Welding - Foaming - Sealing

23.5.2023 BGP

Subject to technical changes