Geberit Mapress CuNiFe Plain Reducer
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 reducer joins two pipe diameters. It is manufactured from a copper/nickel/iron alloy (CuNi10Fe1.6Mn) that delivers exceptional resistance to corrosion, making it especially well suited to pipelines carrying salt water, including saturated solutions of up to 25%.
One end features a Mapress pressing socket for a rapid, flame-free press connection, while the plain end allows onward jointing or transition to other components. A black pressing indicator provides a visual check of the material, and the contoured seal ring ensures that any unpressed connection leaks clearly during pressure testing, so faults are identified before the system enters service. A transparent protection plug keeps the socket free from dust and dirt before installation.
Certified for civil and military shipbuilding and for use on drilling platforms, the fitting supports service, pool and heating water, saltwater cooling systems and salt water-operated sprinkler systems.
Key Features & Benefits
- Superior corrosion resistance: The copper/nickel/iron alloy withstands salt water and saturated saline solutions, making it ideal for shipbuilding, offshore and coastal installations.
- Secure leak detection: The precision seal ring causes unpressed connections to leak during pressure testing, preventing costly faults from reaching operation.
- Clean, flame-free installation: The Mapress press connection offers quick, safe jointing without hot works, reducing installation time on site.
- Compact concentric geometry: The centred, space-saving design allows tighter fitting combinations in confined pipework arrangements.
Materials & Dimensions
| Product Code | Manufacturer Code | DN | d, ø (mm) | d1, ø (mm) | L (cm) | H (cm) |
| 493781 | 67305 | 20 / 12 | 22 | 15 | 5.9 | 3.9 |
| 493782 | 67307 | 25 / 12 | 28 | 15 | 6.6 | 4.6 |
| 493783 | 67309 | 25 / 20 | 28 | 22 | 6 | 3.9 |
| 493784 | 67312 | 32 / 20 | 35 | 22 | 7.1 | 5 |
| 493785 | 67313 | 32 / 25 | 35 | 28 | 6.8 | 4.5 |
| 493786 | 67317 | 40 / 25 | 42 | 28 | 8.3 | 6 |
| 493787 | 67318 | 40 / 32 | 42 | 35 | 7.6 | 5 |
| 493788 | 67323 | 50 / 32 | 54 | 35 | 10.6 | 8 |
| 493789 | 67324 | 50 / 40 | 54 | 42 | 8.9 | 5.9 |
| 493790 | 67337 | 65 / 40 | 76.1 | 42 | 12.7 | 9.7 |
| 493791 | 67325 | 65 / 50 | 76.1 | 54 | 14.6 | 11.1 |
| 493792 | 67338 | 80 / 50 | 88.9 | 54 | 16.2 | 12.8 |
| 493793 | 67327 | 80 / 65 | 88.9 | 76.1 | 16 | 10.7 |
| 493794 | 67346 | 100 / 65 | 108 | 76.1 | 18.4 | 13.1 |
| 493795 | 67330 | 100 / 80 | 108 | 88.9 | 20.4 | 14.4 |
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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