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Geberit Drainage Systems
Jointing methods
4.7
Jointing methods
for Geberit Silent-db20
Geberit Silent-db20 uses the normal HDPE jointing
methods including butt welding, electrofusion couplings,
and mechanical couplings. If using butt welding the
plaining blades fitted to the butt welding machine must be
changed to carbide steel blades – 240.474.00.1).
Mechanical couplings and electrofusion couplings
are the preferred method of joining to minimise noise
generation, see section 3 for more information.
In addition the following alternative methods of jointing
are available:
4.8
Expansion fittings for
Geberit Silent-db20
Expansion Socket
Heavily reinforced extended socket with external ribs to
reduce noise transfer.
The coupling can be jointed to other fittings or pipe
using the standard Geberit HDPE electrofusion
coupling. When bracketing the expansion coupling,
use one size larger acoustic brackets, i.e. for 110mm
expansion coupling, use 125mm bracket). Insert pipe
into sealing socket to the insertion markings on the
side of the coupling. The expansion socket must be
anchored to the structure.
This fitting is only available up to size 110mm.
For 160mm expansion, use double sleeve coupling.
Please see following page for more information.
Vertical installation
To minimise stress on the system it is recommended
that an expansion fitting is installed on each floor located
above the highest branch connection within 1 metre of
the floor level using an anchor bracket positioned around
the expansion coupling.
*Maximum 6 metres to next expansion fitting (anchor point)
**Maximum 3 metres when using double
sleeve coupling.
Geberit Silent-db20 uses the normal Geberit HDPE
jointing methods including butt welding, electrofusion
couplings, and mechanical couplings. (If using butt
welding the planing blades fitted to the butt welding
machine must be changed to carbide steel blades –
240.474.00.1).
Example:
Insertion depth
in an ambient
temperature of
20ºC (vertical
assembly).
