Geberit Mapress CuNiFe Coupling
Technical Specification
- Manufacturer: Geberit
- Material: CuNi10Fe1.6Mn, material no. 2.1972.11
- Operating Temperature: 0°C to 100°C
- Maximum Operating Pressure: 13 bar (1300 kPa)
- Applications: Industry, shipbuilding, salt water pipework
Description
This press-fit coupling is suitable for demanding pipework environments, particularly those in contact with salt water. The cupro-nickel composition delivers exceptional corrosion resistance, remaining reliable even with saturated salt solutions of up to 25%, which makes it a proven choice for civil and military shipbuilding, offshore drilling platforms and coastal industrial installations.
Available in nine sizes from 15mm to 108mm, the coupling provides a straight connection between two plain pipe ends without welding, threading or hot works. Each fitting is identified by its black pressing indicator, printed with the dimension for a fast visual check on site, and is supplied with a transparent protection plug that keeps dust and dirt out before installation.
The contoured seal ring ensures that any unpressed connection leaks visibly during the pressure test, so installation errors are caught before the system enters service. A compact fitting geometry saves space while the smooth, thermally treated material structure supports optimum flow behaviour. Suitable applications include seawater cooling systems, salt water-operated sprinkler systems, heating and cooling water, service and process water, compressed air and inert gases.
Key Features & Benefits
- Corrosion-resistant: The copper/nickel/iron alloy withstands salt water, including saturated solutions up to 25%.
- Certified for marine use: Approved for civil and military shipbuilding and for use on drilling platforms, covering service, pool and heating water, seawater cooling and salt water sprinkler systems.
- Unpressed connections are immediately visible: The seal ring ensures that unpressed fittings leak.
- Black pressing indicator: Enables fast visual identification of the CuNiFe material on site, with the dimension printed on the indicator. Removable by hand after pressing.
Materials & Dimensions
| Product Code | Manufacturer Code | DN | d, ø (mm) | L (cm) | Z (cm) |
|---|---|---|---|---|---|
| 493347 | 67002 | 12 | 15 | 4.8 | 0.8 |
| 493348 | 67004 | 20 | 22 | 5 | 0.8 |
| 493349 | 67005 | 25 | 28 | 5.4 | 0.8 |
| 493350 | 67006 | 32 | 35 | 6.2 | 1 |
| 493351 | 67007 | 40 | 42 | 7.1 | 1.1 |
| 493352 | 67008 | 50 | 54 | 8.3 | 1.3 |
| 493353 | 67009 | 65 | 76.1 | 12.7 | 2.1 |
| 493354 | 67010 | 80 | 88.9 | 14.5 | 2.5 |
| 493355 | 67011 | 100 | 108 | 17.6 | 2.6 |
Application information
| Application Purposes | Operating Temperature | Maximum Operating Pressure |
| For seawater | 0°C–100°C | 13 bar (1300 kPa) |
| For sprinklers (wet) | 0°C–70°C | 13 bar (1300 kPa) |
| For cooling water without antifreeze agent | 0°C–100°C | 13 bar (1300 kPa) |
| For cooling water with antifreeze agent | -30°C–+120°C | 13 bar (1300 kPa) |
| For service water | 0°C–100°C | 13 bar (1300 kPa) |
| For grey and black water with pH value > 6.0 | 0°C–100°C | 13 bar (1300 kPa) |
| For extinguishing water (wet) | 0°C–70°C | 13 bar (1300 kPa) |
| For mineral and lubricating oil | Upon request | Upon request |
| For motor fuels (e.g. diesel) | Upon request | Upon request |
| For compressed air (oil purity class 0-3) | 0°C–100°C | 10 bar (1000 kPa) |
| For compressed air (oil purity class 0-4) | 0°C–100°C | 10 bar (1000 kPa) |
| For negative pressure (1) | 0°C–40°C | Abs. ≥ 0.2 bar / 20 kPa |
| For inert gases (e.g. nitrogen) | Upon request | Upon request |
(1) Usable negative pressure for Geberit piping systems: The usable negative pressure is calculated on the basis of the air pressure at the place of installation minus the absolute pressure of 200 mbar. Example: 980 mbar air pressure - 200 mbar absolute pressure = 780 mbar usable negative pressure in the piping system.
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