Viega Prestabo weld-on piece 28 X 33.7 (1105)

This Prestabo welded-on piece, type 1105, is part of the Viega Prestabo central heating pipe system.

The Prestabo press fitting system is suitable for industrial and central heating installations. The system, including the weld-on fitting, is not suitable for drinking water installations. This can be recognized by the red marking on the weld-on fitting.

The welding piece may only be combined with non-alloy steel.

In addition to this welding piece, the Viega Prestabo range includes various press fittings such as:

• curves,
• transition couplings,
• T-pieces,
• adapters.

Assembly

The welding piece is connected to the Viega tool by means of a press connection.

Pressing takes just 3 steps:

• Cut the pipe to size and deburr the ends to prevent a noisy pipe.
• Mark the insertion depth and slide the pipe into the coupling up to the marking.
• Press the fitting down. The inner ring will squeeze and cut into the pipe, creating a secure connection.

Thanks to the SC-Contur on the fittings, unpressed connections are immediately detected during a press inspection. If the pressing is not performed correctly, water will leak from the coupling without it ejecting from the pipe when pressure is applied.

For a wet pressure test, the pressure range is 1.0–6.5 bar, and for a dry pressure test, the pressure range is 22 mbar–3.0 bar. A clear drop in pressure is visible on the gauge during a dry pressure test.

Want to buy the Viega Prestabo system or need more information?

You can quickly and easily order the desired weld-on piece through our website or purchase it at one of our branches. Still unsure about the optimal central heating pipe system for your situation? Contact one of our specialists for free advice.