26
Geberit Drainage Systems
Jointing methods
4.6
Screw-threaded joints
Available from Ø 40 to 110mm.
Connection properties
a
Non-rigid, mechanical joint.
b
Non-tension-resistant.
c
Demountable.
Application
Screw-threaded joints are used for assembly of various
prefabricated parts when it is necessary to easily
dismantle a system. This type of joint is also used for
connection to pipe spigots in other materials.
The standard version is to be buttwelded onto the Geberit
HDPE pipe end and the extended version (available in
certain diameters) can be electrowelded or buttwelded
onto the pipe end.
The seal is pressed against the thread. A minimum
surface area of the seal is in contact with the water.
Complete screw-threaded joint.
B.360.740/001
1
2
3
4
Nut
Washer
Seal
Thread
4.6.1
Screw-threaded joint
with flange bushing
Available from Ø 40 to 110mm.
Connection properties
a
Non-rigid, mechanical joint.
b
Non-tension-resistant.
c
Demountable.
Application
Wherever there is the possibility that a pipe can be
pulled out of a screw-threaded joint by axial tensile
forces, a flange bushing must be used to ensure
that the connection will resist these forces. It is also
recommended that a screw-threaded joint with flange
bushing should be used when installing in floors or slabs,
where the length of pipe between two connections
(elbows, branches or sleeves) is longer than 2 metres.
The seal is pressed against the flange
bushing and the thread.
Nut
Flange bushing
Seal
Thread
Screw-threaded
joint
