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AquaFast Coupling
The AquaFast couplings is supplied pre-assembled
and should not be dismantled prior to installation.
B
1) AquaFast coupling is suitable for use on the following pipe materials :-
• Metric PVC pipe
• MDPE (PE80), HPPE/HDPE (PE100) Polyethelene pipe – SDR17/17.6 & SDR11
Support liners should not be used with AquaFast for any installation.
AquaFast couplings can also be used to join Metric PVC to PE pipe.
Installation of AquaFast Coupling :-
2) Check that the pipe material, diameter and wall thickness
(if used on PE) are suitable for the AquaFast coupling.
Ensure that the pipe surface is clean and does not have any score marks that may
provide a leak path under the gasket and that the cut end is square.
3) To aid installation, mark both pipe ends at a distance slightly greater than half the
overall length of the AquaFast coupling. (See Fig 1)
4) Slide the AquaFast coupling fully onto either the pipe already in position or the one
to be laid. (See Fig 2)
5) Align the two pipes and adjust the setting gap (See Fig 3), ensuring it is between
the minimum and maximum values as set out in the following 'Setting Gap Table'.
6) Using the marks made in (3), slide the AquaFast coupling to a central position over
the pipe ends (See Fig. 4) and commence bolt up.
7) Working round the AquaFast coupling, evenly tighten the bolts giving each nut one
or two turns at a time to draw up the end rings evenly. For couplings having over 2
bolts, tighten diametrically opposed bolts giving the nuts one or two turns at a time
drawing up the end ring evenly. (See Fig 5)
8) Tighten using spanner of sufficient length to ensure enough leverage is applied
to cause resistors to collape evenly until fitting the metal to metal positive stop
is achieved.
The metal to metal "Positive Stop" feature of the AquaFast fitting
means that installation is completed when the end rings, intermediate ring and
centre sleeve components are all in contact with each other. The resisters between
the end ring and the intermediate ring do not need to be fully compressed.
(See Fig 6)
Pipes with Outside Diameters
From
63
180
2
G
F
E
SETTING GAP TABLE
Recommended Setting Gaps
To
Min (mm)
160
20
315
30
D
C
A
The
Max (mm)
30
50
Components to
AquaFast Coupling:
A) End Ring
B) Gripper
C) Resister
D) Intermediate Ring
E) Gasket
F) Centre Sleeve
G) Bolt / Nut / Washer
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
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