Installation Guide

Installation:
9
4.b. Using Armaflex sheet
insulation on pipes
Application to pipes
1. Apply Armaflex Sheet
Insulation on pipes larger than
5″ IPS. Cut the sheet insula-
tion to proper width, permitting
it to fit loosely without stretch-
ing around the pipe. (See pgs
11-12.) The fabrication must
be done at the job site, at the
same ambient conditions as
the application.
2. Brush-coat both surfaces of
the lengthwise seam with 520
or 520 BLV Adhesive. Allow
the adhesive to dry until tacky
to the touch under slight pres-
sure before joining surfaces.
Wrap the sheet around the
pipe, and seal the seam by
pressing the surfaces firmly
together. Join butt joints
between individual sections
using 520 or 520 BLV
Adhesive. On horizontal pipes
larger than 12″ IPS, adhere
insulation on lower one-third.
Application to fittings
3. Fitting covers are easily made,
using templates designed spe-
cially for screwed fittings 2″, 2-
1/2″ and 3″ and long-radius
weld fittings from 3″ to 10″
IPS. (See size chart, pg 11.)
Note: Templates should be
traced on stiff paper, sheet
metal or hardboard and cut out to
make reusable patterns.
4. Since each template for 45˚
and 90˚ ells is shown as a
symmetrical half of the full fit-
ting cover, the complete fitting
cover is formed by adhering
two halves together at the long
outer arc. Coat both surfaces
with 520 or 520 BLV Adhesive.
Allow the adhesive to dry until
dry to the touch but tacky
under slight pressure before
joining surfaces. Then seal the
seam by pressing the surfaces
firmly together throughout. To
do
this, press the adhesive joint
on the rough side and then
snap the cover inside out and
press the joint on the smooth
skin side. (The tee template is
a symmetrical half, but, in this
case, both halves are laid out
together to form the complete
outline of the fitting cover.)
1
3
2
4
Please note: For installing self
adhering SA Armaflex sheets and
rolls, refer to p.19.