Geberit Mapress CuNiFe Non-Return Valve
Technical Specification
- Manufacturer: Geberit
- Material: CuNi10Fe1.6Mn, material no. 2.1972.11
- Valve material: CrNiMo stainless steel
- Valve seal: PTFE
- Flange section seal: PTFE
- Seal ring: CIIR
- Operating Temperature: -20°C to +120°C
- Maximum Operating Pressure: 13 bar (1300 kPa)
- Applications: Industry, shipbuilding, salt water pipework
Description
This non-return valve allows flow in a single direction while preventing backflow. It forms part of the Mapress CuNiFe system, a copper/nickel/iron alloy range developed for the corrosion resistance demanded by shipbuilding and offshore installations.
The valve body is manufactured from CuNi10Fe1.6Mn alloy, while the internal valve and seals use CrNiMo stainless steel and PTFE respectively, ensuring dependable, long-term performance across a broad temperature range of -20°C to +120°C. Rated to PN13 and available from DN20 to DN50, it suits a wide variety of civil and military marine applications, as well as service, pool, and heating water systems.
Installation is fast and secure thanks to the Mapress press connection. The black pressing indicator provides visual confirmation of the material, and the contoured seal ring means any unpressed joint will leak during pressure testing, allowing faults to be identified before the system enters service. A transparent protection plug keeps the socket free from dust and dirt prior to fitting.
Key Features & Benefits
- High corrosion resistance: The CuNi10Fe1.6Mn alloy withstands salt water and saturated saline solutions, making it ideal for marine and offshore environments.
- Reliable backflow prevention: Permits flow in one direction only, protecting pumps, equipment, and the wider network from reverse flow.
- Secure press connection: The Mapress system enables quick, tool-based jointing without hot works, reducing installation time on site.
- Leak detection when unpressed: The contoured seal ring ensures any missed joint leaks during pressure testing.
Materials & Dimensions
| Product Code | Manufacturer Code | DN | DNV | d, ø (mm) | L (cm) | Z (cm) | PN (bar) |
|---|---|---|---|---|---|---|---|
| 493332 | 92152 | 20 | 20 | 22 | 12 | 3.9 | 13 |
| 493333 | 92153 | 25 | 25 | 28 | 12.6 | 4 | 13 |
| 493334 | 92154 | 32 | 32 | 35 | 14.7 | 4.8 | 13 |
| 493335 | 92155 | 40 | 40 | 42 | 16.7 | 5.3 | 13 |
| 493336 | 92156 | 50 | 50 | 54 | 18.5 | 5.8 | 13 |
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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