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AquaFast Flange Adaptor
The AquaFast flange adaptor is supplied pre-assembled
and should not be dismantled prior to installation.
G
F
E
1) The AquaFast flange adaptor 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.
2) Check that the pipe material, diameter and wall thickness
(if used on PE pipe) are suitable for the AquaFast flange adaptor.
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.
Installation of AquaFast Flange Adaptor on Plain Ended Pipe:
3a) Slide the AquaFast flange adaptor fully onto the existing PE / PVC pipe. (See Fig 1)
3b) Ensure the setting gap between the AquaFast flange and the pipe is between
maximum and minimum values as recommended in the Setting Gap table.
3c) Working round the AquaFast flange adaptor, evenly tighten the bolts giving
each nut one or two turns at a time to draw up the end ring evenly.
Continue tightening until "Positive Stop" is achieved. (See Fig 2)
3d) Tighten using spanner of sufficient length to ensure enough leverage is applied
to cause resistors to collapse evenly until fitting the metal to metal positive stop
is achieved.
The metal to metal "Positive Stop" feature of the AquaFast flange adaptor means
that installation is completed when the end ring, intermediate ring and flange
adaptor body are all in contact with each other. The resister between the end ring
and the intermediate ring does not need to be fully compressed. (See Fig 3)
Connecting Plain Ended Pipe to a Mating Flange.
4a) Slide the AquaFast flange adaptor fully onto the PE/PVC pipe.
4b) Align the pipe, the AquaFast flange and the mating flange such that the bolt holes
of the AquaFast flange and the mating flanges line up. Ensure the setting gap
between the pipe end and the AquaFast Flange face is between the maximum
and minimum values as defined in the Setting Gap Table below.
4c) Fit flange gasket (Viking Johnson recommend the use of an Inside Bolt Circle –
IBC - gasket) and ensure it is concentric with the flange connecting bolts. Slide the AquaFast flange adaptor towards
the mating flange and bolt them using standard bolting procedures.
4d) Working round the AquaFast flange adaptor, evenly tighten the AquaFast bolts giving each nut one or two turns at a time
to draw up the end ring evenly. For flange adaptors having over 2 bolts, tighten diametrically opposed bolts giving the
nuts one or two turns at a time drawing up the end ring evenly. Continue tightening until "Positive Stop" is achieved. The
resister between the end ring and the intermediate ring need not be fully compressed.
Nominal Pipe Outside Diameter
From
63
180
D
C
B
SETTING GAP TABLE
Recommended Setting Gap between Pipe End & Mating Flange
To
Min (mm)
160
315
A
20
25
Components to the
AquaFast Flange
Adaptor:
A) End Ring
B) Gripper
C) Resister
D) Intermediate Ring
E) Gasket
F) Flange Adaptor Body
G) Tee Bolt / Nut / Washer
Fig. 1
Fig. 2
Fig. 3
Max (mm)
25
35
3
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