Insulating with Arma-Chek D >> Using Pre-Covered Sheets
© ARMACELL UK LTD.
D
APPLICATION MANUAL
3 - Insulating with Arma-Chek D >> Using Pre-Covered Sheets
FLANGE COVERINGS
Fabricate fl ange coverings following the same principles
as for valve coverings.
FLAT SURFACES
Flat surfaces are always completely covered with ad-
hesive; on the Armafl ex and metal substrate surfaces.
Cylindrical bodies with an outer diameter of ≥ 600 mm (
≥ 500 mm for off-shore applications) are treated as fl at
surfaces.
1. Around the butt joint, leave 30 mm at the edge of the
sheet of factory-coated Arma-Chek D free of ad-
hesive and place the sheet in position with 5 mm
overlap.
2. Press the overlapping edge of the sheet into
position.
3. Wet seal the butt seam.
Schedule for glueing insulation to fl at surfaces
DUCTWORK RECTANGULAR
1. Insulate the area of the ductwork which borders
directly on the fl ange with a 100 mm wide strip of
Armafl ex.
Determine the dimensions of the ductwork surface to
be insulated. On bends the inner (throat) and outer
dimensions are determined using strips of factory-
coated Arma-Chek D.
2. Cut and apply Arma-Chek D precoated sheets, use
adhesive allover as described in chapter ”Insulating
fl at surfaces“.
3. Use factory-applied precoated Arma-Chek D tubes to
insulate fl anges (rule of thumb: half of tube inner
diameter e fl ange overlap).
Install these tubes following the description in
”Fabrication of bends with Arma-Chek tubes“ point 2
and 3 (see page xx).
Cut the tube in half and dimension according to the
length of the fl ange (use 45° mitred cut for the
corners of the fl ange). Install the halved tubes. Be
sure to bond carefully!
1/2 pre-coated
Arma-Chk D tube
4. Cover uncoated Armafl ex strips around the fl ange
with Arma-Chek D self- adhesive tape or strips.
Arma-Chek D
pre-coated sheet
N
ote:
a. All butt joints must be secured with 50 mm wide
selfadhesive Arma-Chek D tape. Secure edges with
(12) D
