Viega Prestabo XL transition piece 76.1 X 2 1/2 (1111XL)

This Prestabo XL transition coupling, type 1111XL, 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 XL transition coupling, is not suitable for drinking water installations. This can be recognized by the red marking on the transition coupling.

The transition coupling may only be combined with non-alloy steel.

In addition to this XL transition coupling, the Viega Prestabo range includes various press fittings such as:

• curves,
• welding pieces,
• adapters.

Assembly

The Prestabo transition coupling 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. The inner ring will pinch and "cut" into the pipe, creating a secure connection.

Thanks to the SC-Contur, unpressed connections are immediately detected during a press inspection. If the pressing is not performed correctly, water will leak from the coupling without it detaching 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?

The desired XL transition coupling can be ordered quickly and easily through our website or purchased 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.