Roxul Industrial Insulation Process - Manual (Page 45)

1.2 Insulation of piping
1.2.7 Insulation of valves and flanges
1.2.8 Insulation of pipe elbows and
t pieces
The cladding of elbows and T-pieces is susceptible
to damage, due to expanding or vibrating pipes.
There is a particular risk of moisture penetrating
damaged swage connections in the cladding, if the
object is located outdoors.
For the insulation of shaped pieces, we
recommend using the same insulation in the
same thickness as used for the pipe.
Insulation of pipe elbows with RoXUL ®
pipe sections
For the insulation of pipe elbows with pipe
sections (e.g. ProRox
® PS 960 NA ), the pipe sections
are cut into segments and tightly fitted onto the
pipe elbow with the lengthwise joints facing
downwards. The angular division of the segments
should correspond to the radius of the pipe elbow.
The pipe section segments are fastened to the
pipe elbow with clamps or binding wire. Joints
between the individual segments are plugged
tightly with loose ROXUL insulation.
Insulation of pipe elbows with wired
mats or ProRox ® pipe wraps (mats)
If the piping is insulated with wired mats or pipe
wraps (mats), shaped pieces such as pipe elbows
or T-pieces are generally insulated with the same
wraps (mats). In this case, the wraps (mats) are
cut into so-called fish-shaped elbow segments.
These are mounted onto the pipe elbow to seal the
elbow. With wired wraps (mats), all the joints (both
circular and lengthwise joints) are sewn together
with binding wire or wrap (mat) hooks. Spacers
are required at least at the start and end of the
elbow (for more details, please see page 34).
Pipe wraps (mats) are fixed to the pipe elbow with
metal or plastic straps. Any gaps between the
individual segments should be plugged with
insulation. Secure the joint edges with self-
adhesive aluminum tape.
1. Pipe - 2. ProRox ® insulation - 3. Cladding - 4. Sheet-
metal screw or rivet - 5. Collar - 6. Collar -
7. Clamps - 8. Rain deflector - 9. Leak detection fitting -
B ≥ 2" (50 mm) - A = bolt length + 1.2" (30 mm) 1. Pipe - 2. Insulation: ProRox ® Pipe Sections -
3. Cladding - A and B = Segmented pipe sections
42