Geberit Mapress CuNiFe Flange PN6
Technical Specification
- Manufacturer: Geberit
- Material: CuNi10Fe1.6Mn, material no. 2.1972.11
- Operating Temperature: 0°C to 100°C
- Maximum Operating Pressure: 6 bar (600 kPa)
- Applications: Industry, shipbuilding, salt water pipework
Description
This PN6 flange forms a secure, permanently tight transition between Mapress copper/nickel/iron pipework and flanged plant, valves or ancillary equipment. The cupro-nickel alloy delivers exceptional resistance to corrosion, making it particularly well suited to systems carrying salt water, including saturated solutions of up to 25%.
The flange is fitted with a pressing socket and a black pressing indicator that identifies the CuNiFe material. Any connection left unpressed will leak during the pressure test, allowing faults to be detected before the system enters service. Certified for civil and military shipbuilding and for use on offshore drilling platforms, it carries a PN6 rating to Design B1 (raised sealing strip with standard sealing strip) in accordance with EN 1092-3.
Key Features & Benefits
- High corrosion resistance: The copper/nickel/iron alloy withstands salt water and saturated saline solutions, ensuring long service life in marine and offshore environments.
- Black pressing indicator: Enables a fast visual check of the material and can be removed by hand once the connection has been correctly pressed.
- Leak detection when unpressed: Non-pressed connections are immediately identifiable during the pressure test, preventing costly faults during operation.
- Shipbuilding certification: Approved for civil and military shipbuilding and for use on drilling platforms.
- Standardised flange design: Manufactured to Design B1 (raised sealing strip with standard sealing strip) in accordance with EN 1092-3 with a PN6 rating.
Materials & Dimensions




| Product Code | Manufacturer Code | DN | d, ø (mm) | di, ø (mm) | D (cm) | k (mm) | m (mm) | L (cm) | l (cm) | Z (cm) | n (pc.) | PN (bar) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 493762 | 68684 | 20 | 22 | 19 | 9 | 65 | 11 | 6.3 | 1 | 4.2 | 4 | 6 |
| 493763 | 68685 | 25 | 28 | 25.2 | 10 | 75 | 11 | 6.7 | 1 | 4.4 | 4 | 6 |
| 493764 | 68687 | 40 | 42 | 39 | 13 | 100 | 14 | 7.7 | 1.2 | 4.7 | 4 | 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.

