Installation Guide

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13 - Excavate the installation location for the T-junction, assembled Delta Chamber and adjoining pipe
work. Trenches should be wide enough to include a minimum of 75mm bedding and overlay support and
a minimum of 100mm side support. In non-trafficable areas allow for a minimum of 300mm cover
(measured from the top of the Delta/pipe to the ground surface). See Figure 5 for installation. For further
information we recommend using AS3500.2:2018 as a guide.
14 - Using a T-junction as a template, measure the pipes at your chosen installation point and cut to create
space for the T-junction. Using priming fluid and solvent weld glue, install the T-junction and fittings as
required and extend pipe work ready to install your Delta.
15 - Place your Delta in position and using priming fluid and solvent weld glue connect your Delta to the
extended pipe work ensuring you push the pipe hard up against the Cage/Seat & Ball. Backfill your Delta
using bedding sand capable of passing through a 2mm sieve, as per State and Local Government
guidelines and information provided in the previous step.
16 - The Transparent Rapid Release Exit Funnel needs to be installed in an accessible location (above
ground where the ground slopes away or in a stormwater pit for access. Using a min. 170mm of 100mm
pipe (3.5" of 4" pipe) and solvent weld glue, attach the 100mm90mm (4”-3”) Socket Reducer (100mm/4”
End Coupling) to the outlet (downstream) Delta End Cap. Screw the Transparent Rapid Release Exit Funnel
onto the threaded end of the Socket Reducer.
17 - Install the Primary Filter Screen, Transparent Rapid Release Exit Funnel, and Electronic Release Valve
by following the instructions in Figure 6.
Figure 5
Delta In-ground Installation