Page 47 - +GF+ PPR Aquasystem Catalogue 2017_Neat

Butt Fusion Installation

Butt Fusion Jointing of PP Piping Systems

The principle of fusion jointing Butt fusion jointing method
The fusion areas of the pipes and fittings are heated to fusion
temperature and joined by means of mechanical pressure, without
using additional tools. A homogeneous joint results. Butt fusion must
only be carried out with fusion jointing machines which allow the
jointing pressure to be regulated. Details of the requirements for
machines and equipment used for butt fusion jointing thermoplastics
are contained in DVS 2208 Part 1. The drawing to the left illustrates
the principle of fusion jointing.
1 Pipe
General requirements
2 Heating element
The basic rule is that only similar materials can be fusion jointed. For
3 Fitting
best results, only components which have a melt flow index in the
range from MFR 190/5 0.4 to 1.0 g/10 min should be fusion jointed.
This requirement is met by PP butt fusion fittings from GF.
The components to be jointed must have the same wall thicknesses
at the fusion area. Butt fusion jointing may only be performed by
adequately trained personnel.

Join only components with similar wall Check the temperature
thicknesses Recommended temperature of heating element between 200°C to
220°C. Check temperature before commencing the fusion jointing,
this is best carried out with the use of a digital thermometer with a
sensor for measuring surface temperature.
To ensure the right temperature setting should be checked from
time to time during the jointing work. The temperature of the heating
element is particularly sensitive to ambient temperature and drafts.

incorrect correct

correct installation

| 45