Installation Guide

Installation:
6
3. Armaflex on
existing piping: the
snap-on method
The snap-on method is used
when pipe or copper tubing is
insulated after it has been
installed and connected.
Armaflex pipe insulation
1. With unslit tubular Armaflex
Pipe Insulation, use a sharp
knife to slit the Armaflex
lengthwise on one side. For
oval tubes, slit on flat side
only.
2. Snap the insulation over
the pipe.
3. Brush-coat both slit surfaces
with Armaflex 520 or 520 BLV
Adhesive alternating sides for
even drying time. Push the
insulation down over pipe to
hold adhesive-coated surfaces
apart while the adhesive dries.
4. Allow the adhesive to dry until
dry to the touch but tacky
under slight pressure before
joining surfaces. Test with back
of fingernails as shown.
520 or 520 BLV Adhesive
bonds instantly on contact, so
pieces must be put together
accurately. Press joints togeth-
er firmly, making sure that you
get a bond all the way through
the joint, not just at the outer
edges.
5. If the insulation should become
stuck to the pipe after applying
adhesive, break the insulation
loose by running a finger down
the pipe as shown in the illus-
tration.
6. When the adhesive has
air-dried, apply moderate pres-
sure to entire joint to assure a
vapor-tight bond.
7. In double-layer work when
using the snap-on method,
apply Armaflex with side and
end joints staggered where
possible.
1
3
2
4
5
6
7
When hot-water piping is being
insulated, allow a minimum of 36
hours before circulating hot water
into insulated lines having
adhesive-bonded slit seams.
Before using 520 or 520 BLV
Adhesive, read the precautionary
information printed on the can
label. (Also see “520 or 520 BLV
Adhesive” submittal sheet)
Please note: For installing self
sealing AP Armaflex SS, refer to
p.19.