10
Make sure the delivery from
RainBank to your home is within the
following pipe length limits:
Pipe
diameter
Max. pipe
length @
6 lpm flow
Max. pipe
length @
12 lpm flow
15mm
1m
1m
18mm
90m
27m
20mm
235m
135m
For each bend or tee you should reduce
the above distances by 0.5m.
• We recommend fitting isolation valves
to the rainwater and mains water pipe
so that the RainBank can be easily
and conveniently removed if required.
This saves both wasting rainwater and
having to turn off the mains supply if
the unit ever has to be removed.
• While RainBank does have an in-built
DUAL CHECK back flow prevention
valve, some water authorities require
an additional external back flow
valve to be plumbed into the mains
water delivery line, to prevent any
possible contamination of mains
water by rainwater, particularly if the
tank is partially or fully submerged.
Check with your local water authority
for their plumbing guidelines on
rainwater tanks.
• Double check valve assemblies are
available from Davey and should be
installed if the tank is partially or fully
buried.
• Mains water must be limited to below
600kPa.
Summary of Contents for RainBank KRB1
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