Installation Guide

13
4.c. Armaflex sheet on
90° elbows
1. Check the type ell (long or
short radius) and size.
2. Take throat measurement from
chart (R1). Swing an arc from
one corner of the Armaflex
sheet, using this measure-
ment. Take half circumference
plus throat measurement from
chart (R2). Using the same
corner of the sheet from which
the arc R1 was drawn, now
swing an arc, using the meas-
urement R2.
3. Cut out on arcs R1 and R2,
and use as a pattern for the
second half of the elbow
cover. Adhere outer arcs of the
two halves with Armaflex 520
or 520 BLV Adhesive. As arcs
are adhered, the cover will
“dish” upward. After seam is
squeezed together on one
side, “dish” the cover the oppo-
site direction, and squeeze the
other side of seam.
4. Put cover around elbow fitting,
and adhere inner arcs.
5. Trim ends of fitting cover
square to meet the straight
pipe insulation. Place metal
band or metal strap around fit-
ting cover, and scribe a
straight line. Then trim with a
sharp knife.
Outer
arcs
▲
▲
3
Weld
▲
1
▲
▲
R
1
Inner
arcs
4
▲
▲
Tr im to
line
5
▲
R
2
R
1
R
1
C/2
C/2
▲
▲
▲
▲
▲
▲
▲
▲
▲
2
Installation:
Please note: For installing self
adhering SA Armaflex sheets and
rolls, refer to p.19.