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

A Geberit Silent-db20 stack with floor connection

Please select an info point in the picture

Geberit Silent-db20 pipe assortment

Dimensions

Fittings

Geberit Silent-db20 Offset

Accessories

Technical data

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

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

Geberit fire protection sleeve for Geberit Silent-db20

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

Video

Greater safety

Learn about the effective fire protection offered by the Geberit fire protection sleeve RS90 Plus DIN.

Installation

Learn more about the installation of Geberit Silent-db20 Offset

All technical information about Geberit Silent-db20 can be found in our product catalogue

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Links

Sound insulation
Fire protection