7
Tighten flange screws with a hand held screwdriver only. Over tightening the screws
could strip out the inserts or crack the liner flange. The screws need only to be snug
for the silicone to make a seal.
Apply silicone on the threads of the Male Thread Adaptor (MTA). Screw the MTA into the
inlet until tight. Use PVC Glue (not included) to glue the PVC flex hose into the MTA. Once
the FastFalls is sealed to the liner, level and positioned correctly, place a couple of large
stones on top of the FastFalls to ensure it does not move when backfilling.
MTA
Hiding the Fastfalls
Position rocks on either side of the
FastFalls, inside the liner. Start working
the rock in and around the front of the
FastFalls, building up to the lip of the
FastFalls, which will provide support for a
lip rock. The Fastfalls will support the
weight of gravel and rocks, stacked
directly on top of the unit. Consider
covering the whole unit with a single sizeable
overhanging capstone, or stack individual smaller stones
and gravel on top to completely conceal the FastFalls. For a ‘grown-in’
look, cover the FastFalls with soil and plant small evergreens and perennials right on top.
The raised lip will keep the gravel or soil from washing into the water.
Apply Silicone Sealant in a
continuous, consistent bead
along the center of the threaded
inserts. Once completed, return
the liner to its dry-fit position.
Attach the supplied flange to
the FastFalls, starting with the
top screw first, working around
the flange. If needed, use an awl
or nail to pierce the liner before
inserting the screws. Do not fully
tighten any screws until all of
the screws have been installed.
Once completed, trim away the
liner on the inside of the flange
to expose the threaded inlet.
