Geberit Mapress Therm for heating and cooling circuits
Cost-effective and corrosion-resistant stainless steel system
This low-alloy stainless steel piping system is a corrosion-resistant and cost-effective solution for closed heating and cooling circuits – applications where moisture cannot always be avoided.
In cooling systems, temperature differences between the contents of the pipes and the outdoor area lead to condensation. When laying floors, wet, cement-based building materials, inadequate drying times and the unintentional ingress of plaster or patio water can all present a hazard.
The Geberit Mapress Therm piping system made of CrTi steel is suitable for both of these application scenarios without requiring extensive rework and at a consistent price level.

Main applications and areas of use
Geberit Mapress Therm is suitable for the following applications:
Benefits of Geberit Mapress Therm Suitable for many closed-system applications
Cooling and heating applications
The Geberit Mapress Therm piping system is suitable for a wide range of applications in industrial environments, including heating and cooling circuits (with or without frost protection), as well as compressed air, inert gas and negative pressure applications.

Clear system marking
Geberit Mapress Therm is clearly recognisable thanks to orange pressing indicators on the pressfittings and lines on system pipes. The ‘non-potable water’ symbol has also been added.
This symbol is printed on every Geberit Mapress Therm fitting so you can still clearly recognise them even after pressing.

Geberit Mapress Therm overview
Facts & figures
Assortment overview
- 11 nominal widths from d12 to d108
- 200 different fittings are available
- CrTi system pipes
Dimensions
Available pipe dimensions
| Nominal width DN | Dimension d x s (mm) |
|---|---|
| 12 | 15 x 1.0 |
| 15 | 18 x 1.0 |
| 20 | 22 x 1.2 |
| 25 | 28 x 1.2 |
| 32 | 35 x 1.5 |
| 40 | 42 x 1.5 |
| 50 | 54 x 1.5 |
| 65 | 76.1 x 2.0 |
| 80 | 88.9 x 2.0 |
| 100 | 108 x 2.0 |
Fittings
Available fittings
- Orange pressing indicator to check whether the fittings have been pressed correctly
- Orange pressing indicator indicates stainless steel
- Non-potable water symbol printed on the pressing indicator and fitting ensure long-term identification.
- Dimension printed on the pressing indicator
- Non-pressed connections are leaky and immediately identifiable during a pressure test
- 200 different fittings are available

Seals
Available seal rings
Geberit Mapress Therm can be used in different applications with the black CIIR seal ring or blue FKM seal ring. See the application overview for all applications of Geberit Mapress Therm with the various seals. Please follow the instructions provided.
Seal ring CIIR, black
Geberit Mapress Therm with the black CIIR seal ring can be used for the following liquid media in closed systems:
- Cooling and heating water without antifreeze agent
- Cooling and heating water with antifreeze agent
- District heating water ≤ 120 °C
- Sprinkler (wet)
- Extinguishing water (wet)
And for the following gaseous media:
- Compressed air (oil purity class 1–3)
- Negative pressure
- Inert gases (e.g. nitrogen)

Seal ring FKM, blue
Geberit Mapress Therm in combination with the blue FKM seal ring provides high temperature and chemical resistance.
Can be used for the following liquid media in closed systems:
- District heating water ≤ 140 °C
- Thermal media (solar)
Can be used for the following gaseous media:
- Compressed air (oil purity class 1–X)

System pipes
Available system pipes
Geberit Mapress Therm system pipe CrTi (1.4520)
- The low-alloy stainless steel used is corrosion-resistant
- Marked with continuous orange line
- With orange protective caps
- Labelled with the ‘non-potable water’ symbol

Environmental product declaration
Environmental product declaration (EPD)
Environmental product declarations (EPDs) create transparency and allow products to be compared in terms of their environmental impact.
- Geberit Mapress Therm system pipe
- Geberit Mapress Therm fittings
Installation
A quick guide to installation
Geberit offers a comprehensive range of pressing tools, pressing jaws and collars to install Geberit Mapress pipes and fittings.
Note: The installation process for Geberit Mapress d12 to d88.9 is different to that for Geberit Mapress d108.
Why choose Geberit Mapress Therm?
Easy recognition
Orange identifiers and non-potable water symbols on the fittings and system pipes.
Clear identification of unpressed connections
If the pressing indicator is still intact, the connection has not yet been pressed.
For heating and cooling circuits
Perfect for applications with temperature differentials
Corrosion-resistant
Corrosion-resistant and economical thanks to the low-alloy stainless steel
Geberit Mapress Therm product range Articles, technical information and more
Do you have any questions? We are happy to help you.
Our specialists advise planners, plumbers and other professionals on their projects. They will be happy to advise you on how to best master your current challenges with our products.
Do you have any questions? Contact us.
Frequently asked questions about Geberit Mapress Therm
How corrosion-resistant is Geberit Mapress Therm?
Geberit Mapress Therm is corrosion-resistant for closed, low-oxygen heating and cooling systems. It offers reliable resistance under the specified operating conditions thanks to the use of EN 1.4521 stainless steel.
How does Geberit Mapress Therm differ from Geberit Mapress Stainless Steel?
Geberit Mapress Therm is made of EN 1.4521 stainless steel for closed circuits whereas Geberit Mapress Stainless Steel is made of EN 1.4401 for universal applications.
When would you use Geberit Mapress Therm or Geberit Mapress Carbon Steel?
Geberit Mapress Therm is used in closed heating and cooling systems.
Geberit Mapress Carbon Steel is suitable for closed heating and industrial plant systems with low corrosion resistance requirements.












