Geberit Silent-db20 Robust connection for strong sound insulation
Triple protection against sound
Whether stack or floor connection – the highly sound-insulating drainage system Geberit Silent-db20 is the ideal solution for projects with high sound insulation requirements:
- Premium residential buildings
- Hotels
- Hospitals
- Retirement and nursing homes
Geberit Silent-db20 applications
- Building drainage
- Conventional roof drainage system
Geberit Silent-db20 is suitable for embedding in concrete.
Many good reasons for Geberit Silent-db20
Geberit Silent-db20 pipe assortment
Dimensions
| Nominal width (DN) | Dimension d x s (mm) |
|---|---|
| 56 | 56 x 3.2 |
| 60 | 63 x 3.2 |
| 70 | 75 x 3.6 |
| 90 | 90 x 5.5 |
| 100 | 110 x 6 |
| 125 | 135 x 6 |
| 150 | 160 x 7 |
Fittings
- Large selection of fittings
- Mineral-reinforced for noise reduction in the impact zones
- Diverse special fittings
Example Geberit Silent-db20 duct branch (swept entry) 88.5°/180° parallel
Space-saving – if the stack is positioned between the toilet and the washbasin, the Geberit Silent-db20 duct branch fitting 88.5°, swept entry, allows for a very compact installation.
Geberit Silent-db20 Offset
Perfectly oblique – Geberit Silent-db20 Offset Five benefits at a glance
Tension-free installation:
- For axial offsets of up to 10 cm
Easy installation:
- Same installation process as for all other Geberit Silent-db20 fittings
- Fittings can be aligned by hand
Shorter installation time
- Up to one third shorter installation time (compared to installation with two 45° bends)
- No installation of a sliding bracket required
- Adjustable to any axial offset of up to 10 cm
Flexible solution
- A single product to correct axial offsets of up to 10 cm
Better sound insulation
- Quieter draining than with a direction change with two bends
- No sliding bracket means the transmission of structure-borne sound is reduced
The images from the acoustic camera at a flow rate of 2 l/s with Geberit Silent-db20: With the conventional solution with 45° bends, the airborne sound values increase by 7–9 dB compared to a straight stack. With the Geberit Silent-db20 Offset fitting, the value is almost equivalent to a straight stack.
1. Images from the acoustic camera at a flow rate of 2 l/s in a straight stack
2. Images from the acoustic camera at a flow rate of 2 l/s in a straight stack with Geberit Silent-db20 Offset fitting
3. Images from the acoustic camera at a flow rate of 2 l/s in an installation with two 45° bends
Accessories
Fire protection for Geberit Silent-db20 pipeline
- The fire protection sleeves from Geberit can be used for a fire resistance class F 120
- Fire tests carried out in accordance with EN 1366-3 for a multitude of different installation types
- Approved for a fire resistance of 90 minutes (ETA/ETB) with the Geberit fire protection sleeve RS90 Plus EN
Geberit air admittance valve GRB90 for Geberit Silent-db20
- Alternative for installations which do not allow conventional ventilation due to space considerations.
- Available for dimensions up to DN110
Technical data
| Geberit Silent-db20 | |
|---|---|
| Material | PE-S2 |
| Coefficient of linear expansion | 0.17 mm/(m K) |
| Absorption of linear expansion | Requires expansion socket with double flange or double sleeve coupling |
| Installation temperature | -20 to 40 °C |
| Permanent load application temperature | -20 to 60 °C |
| Chemical resistance | 95 % of all standard alkalis, acids and chemicals |