Reducers
Fabrication Manual
Reducers are supplied in two half-shells, to be assembled.
The procedure to assemble a Reducer is simple and fast.
Mark one of the half-shells, by using the tape-
marker.
Mark it internally and externally.
These line-marks will guide you when applying
the aluminium tape.
Apply the glue on both sides of the half-shells.
Wait the necessary time before assemblying the duct.
You can use ALPTAK glue or HYDRO-GLUE. Check the glue TDS to
know how long you have to wait.
NOTE: Use the template to avoid spraying the glue inside the duct.
Assemble the duct by joining the two half-
shells.
Then apply the aluminium tape, internally and
externally, by following the line-marks.
Making 1-step transition
A Reducer makes 2-step transition in the same piece:
- from 600 mm to 500 mm and then to 400 mm
- from 400 mm to 300 mm and then to 200 mm.
However, the Reducers have a reference mark in the middle to make easy and fast to cut them in half and
get 1-step transition.
In order to make 1-step transition, it is necessary to assemble completely the Reducer first. Once the
Reducer has been assembled, then you can proceed to cut it in the middle.
Cut the Reducer following the line-mark.
Use the Round Cutter for an easy and fast
procedure.
-6-
