- Green Building Store

INSTALLATION MANUAL
Professional insulation with Armaflex
Armacell Customer Services Department
Tel:
0161 287 7100
Fax:
0161 633 2685
E-mail: [email protected]
Web: www.armacell.com
List of contents
Installation Instructions
• Rules for working with Armaflex . . . . . . . . . . . . . . 3
• Advice for insulating in refrigeration and
A/C plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• Tools required for installing Armaflex. . . . . . . . . . . 5
• The correct use of Armaflex adhesive. . . . . . . . . . 6
• Cutting Armaflex tube . . . . . . . . . . . . . . . . . . . . . . 8
• Pipe insulation with self-adhesive tube . . . . . . . . . 9
• Insulating with Armaflex tube – sleeve-on . . . . . . 11
• Angles for screwed pipe joint – option one . . . . . 12
• Angles for screwed pipe joint – option two . . . . . 13
• Installing Armafix insulated pipe supports. . . . . . 14
• Insulating large pipes with Armaflex sheet . . . . . 20
• Multi-layer insulation of pipework . . . . . . . . . . . . 21
• Multi-layer insulation of pipes and
flat surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
• Flat surface insulation with self-adhesive
Armaflex sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
• Flat surface insulation with sheet and
Armaflex adhesive . . . . . . . . . . . . . . . . . . . . . . . . 26
• Surface insulation of large vessels and tanks . . . 30
• Insulating vessels and tank dome ends. . . . . . . . 31
• Handling sheet insulation correctly for
vessels and tanks . . . . . . . . . . . . . . . . . . . . . . . . 32
Fabrications from Armaflex Tube and Sheet
Tube:
• Bend with 90° angle . . . . . . . . . . . . . . . . . . . . . . 33
• Bend with 45° angle . . . . . . . . . . . . . . . . . . . . . . 34
• Segment bend with one middle part (2+1) . . . . . 35
• Segment bend with two middle parts (2+2) . . . . . 36
• Segment bend with three middle parts (2+3) . . . 37
• T-piece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
• Angle T-piece. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
• Cross piece joint . . . . . . . . . . . . . . . . . . . . . . . . . 40
• Swept T-piece . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
• Y-tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
• Pipe reducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
1
List of contents
Fabrications from Armaflex Tube and Sheet
Sheet:
• Two part bend – option one. . . . . . . . . . . . . . . . . 44
• Two part bend – option two . . . . . . . . . . . . . . . . . 48
• Valve coverings . . . . . . . . . . . . . . . . . . . . . . . . . . 49
• Neck-T and pipe-T. . . . . . . . . . . . . . . . . . . . . . . . 52
• Offset angle and pipework bend angle . . . . . . . . 57
• Strainers, strainer valves and incline
seat valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
• Concentric reducer – equal . . . . . . . . . . . . . . . . . 70
• Essentric reducer – flat back . . . . . . . . . . . . . . . . 71
• Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
2
Adhesive use and painting advice
• Armaflex 520 adhesive . . . . . . . . . . . . . . . . . . . . 73
• Armaflex 525 adhesive . . . . . . . . . . . . . . . . . . . . 74
• Armaflex cleaner . . . . . . . . . . . . . . . . . . . . . . . . . 75
• Armaflex FR paint . . . . . . . . . . . . . . . . . . . . . . . . 76
• Hot climates – high ambient temperature
and relative humidity . . . . . . . . . . . . . . . . . . . . . . 79
• Armaflex with other insulation product types. . . . 80
• Armaflex installation with trace heating cable . . . 85
• Fabrication estimation charts . . . . . . . . . . . . . . . 87
Rules for working with Armaflex
• Use good quality tools, in particular a sharp knife,
fresh Armaflex adhesive and a good brush.
• Oval tubes should always be split on the flat side.
• Use clean Armaflex material – with no dust, dirt, oil
or water on the surface, if present clean with
Armaflex cleaner.
• Use the right dimensions!
• Self-adhesive Armaflex tape should not be used as
the sole fixing for butt and longitudinal joints and
seams. It should only be applied to joints and seams
that have been glued previously with Armaflex
adhesive and only after 36 hours to allow complete
out-gassing of the adhesive solvent.
• Armafinish FR paint can be applied immediately
after the insulation has been installed, with a
second coat of paint applied within 3 days, to
provide UV protection.
• Never pull glued joints when sealing them, always
push them together.
• Never insulate plants and systems that are in
operation! Only start insulated plants after 36 hours
– after this time the adhesive is fully cured.
3
Advice for insulating in refrigeration and A/C plants
4
• Attach each end of the Armaflex tube to the pipe
with Armaflex adhesive, and make sure the
adhesive joints are firm at critical points such as
flanges, T-sections, elbows, supports, etc.
• Provide effective protection against corrosion on
surfaces of steel pipes and vessels, due to the
presence of chloride ions in the normal building
environment using aluminium foil or special paints.
• Never insulate chilled water lines or refrigeration
equipment if the sections to be insulated are too
close together. An air gap of at least 25mm should
be present between the chilled water line insulated
surfaces to prevent sweating.
Note: When insulating stainless steel with Armaflex,
please consult our Customer Services Department,
or refer to the Stainless Steel section of the Armaflex
Specifier’s Manual.
Tools for installing Armaflex
Tape measure
or folding rule
Straight edge
Scissors
Chalk for marking
irregular shapes
Short knife – 75mm
Brush with short, firm
bristles
Silver ink marker pen
Long knife – 300mm
Smooth spatula
Dividers
Sharpening stone
Sharpened pipe ends for
the most common pipe
diameters
Callipers
Gluemaster
Roller for surface gluing
Note: A three knife set plus sharpening stone are available together as a tool kit
5
The correct use of Armaflex adhesive
Insulation surfaces soiled with dust, dirt, oil or water must
be cleaned with Armaflex cleaner before starting work.
• Pay attention to the installation instructions on the
adhesive can. Use small cans during work so that
the adhesive does not thicken too quickly. Refill from
larger cans when necessary and keep closed when
not in use to avoid thickening
• Stir adhesive well after opening. If left to stand, heavier
components in the adhesive may settle in the bottomx
of the can. These have to be mixed thoroughly beforex
use to effectively activate the adhesive.
• Use a brush with short, stiff bristles and keep clean.
• Apply Armaflex adhesive thinly and evenly onto both
surfaces to be glued.
6
• When sticking Armaflex to other materials (e.g.
metal), first apply the adhesive to the Armaflex and
then to the other clean surface.
• Armaflex adhesives have tack times from 3 to 10
minutes. The time will vary according to the grade,
ambient temperature and relative humidity. Avoid
‘open times’† in excess of 20 minutes.
† The ‘open time’ is defined as the period between
first applying adhesive and finally closing together
the joint, seams or surfaces.
• Allow the adhesive to ‘tack-dry’. The correct initial
drying time is checked by the ‘fingernail test’: touch
the surface with a fingernail, if the fingernail does
not adhere to the surface and the surface itself
does not feel tacky the joint may be closed. The
maximum adhesive force will be obtained when two
tack dry surfaces are brought together.
• The glued surfaces should be pressed together,
do not stretch. Do not leave glued seams on the
top of the insulation. When working outdoors,
always turn the glued seams away from the sun.
• When gluing joints under compression, the wet
adhesive method should be applied. Pull the seam
apart slightly and apply Armaflex adhesive thinly and
evenly with the brush to both surfaces and press
together. No open time is needed in this case.
• Ideal installation temperature is 15°C to 20°C.
Do not use adhesive under 0°C. If the adhesive is
too cold it can be warmed in a bucket of hot water.
At temperatures below 5°C, condensation can
appear on the surfaces to be glued or the adhesive
film. If this occurs the materials cannot be glued,
or only with difficulty. Check whether this has
happened by applying absorbent paper. When
working in areas with a high atmospheric humidity
and high temperatures (see Hot Climates page 79).
• To speed up Armaflex installation, use the Armaflex
Gluemaster. Please consult our Customer Services
Department for further information.
• Use Armaflex cleaner to clean your tools,
contaminated metal surfaces or surfaces which
have had talc applied.
Note: Check that the adhesive will adhere to any rustinhibiting primer that has been used to protect steel
pipes. Armaflex adhesive may not adhere to asphalt,
bitumen, red-lead or cement surfaces.
Do not mix Armaflex cleaner to Armaflex adhesive to
thin it out – warm it.
7
Cutting Armaflex tube
How to cut Armaflex tube
Use a sharp knife. Keep knife at
a low angle when slitting tube
8
Use sharpened off-cuts
of pipes to make holes
Always cut on the flat sides
of tubes
Pipe insulation with self-adhesive Armaflex tube
Clean dust, dirt, oil and water from pipework using
Armaflex cleaner where necessary. Install Armaflex
when ambient temperature is between +10 and +35°C.
Open pre-slit Armaflex
and snap onto pipe.
Adjust fitted Armaflex to ensure
slit is easily accessible.
Locate the end of the self-seal protection strip
coloured yellow.
Remove the protection strip by drawing it away
from the insulation.
Please note: remove protective strip from both sides!
9
Pipe insulation with self-adhesive Armaflex tube
Close the slit and squeeze together to ensure a
permanent seal.
Using a circular motion, push the Armaflex around bends.
Do not pull the insulation.
10
Push the Armaflex along the pipe using a circular motion.
Do not pull the insulation.
Seal all joints with Armaflex Adhesive. Do not stretch when
sealing joints.
Insulating with Armaflex tube (sleeve on technique)
In principle, tube material can simply be slid over bends.
However, with tight bends in pipes (small radius) there
is a risk that the insulation will kink in the throat of the
bend, reducing insulation thickness.
In the refrigeration/air-conditioning sector the calculated
insulation thickness is then no longer achieved and
condensation can occur on the surface of the insulation.
When installing tubes with a self-adhesive seal there
is the additional risk of compression of the adhesive
lining in the bend area, which can lead to seams
coming apart.
The following should be taken into account
in these cases:
If the insulation kinks and the adhesive seam is
compressed the bends should be cut into segments
to fit (see page 33 – 37).
Note: On large bore pipes (up to 114mm diameter) we
recommend that you use Armaflex tube with Armaflex
adhesive. For pipes above 114mm diameter we
recommend that you use Armaflex sheet with
Armaflex adhesive (see page 20).
11
Angles in screwed pipe joints – option 1
Many fittings, such as screwed bends and elbows on iron pipe
systems, push-fit plastic joints, shrink-fit sleeves and largesized welded pipe joints, may have a significantly larger outside
diameter than the adjoining pipes. In these cases a larger bore
Armaflex tube must be used on this part of the system. This
section shows two methods of insulating this type of fitting.
12
Push the Armaflex tube as
far as the pipe fitting. For
chilled water and refrigeration
pipework only, secure the
bore of the tube to the pipe
with adhesive. The adhesive
band to be the same width
as the insulation thickness.
The fitting cover is made from
tube the bore of which is the
O.D. of the incoming tube.
Provide a 25mm overlap at
each side. The fitting may be
made up using any of the
methods described on pages
33 – 37. Slit in the throat, apply
adhesive to seams, fit when
tack dry. Wet seal overlaps.
Angles in screwed pipe joints – option 2
The fitting cover is made
from tube material, the bore
of which corresponds to the
maximum outside diameter
of the screwed fitting.
Provide at least a 38mm
overlap beyond the end of
the fitting on each side.
For pipes up to 35mm, cut
two wedge-shaped pieces
at 180° to each other, from
top and bottom centres, at
each end of the fitting. For
large bore tubes cut four
wedges, one at each 90°
around the circumference.
The wedges should taper
back to the points where the
fitting would start and be
sized so that the bore of the
Armaflex reduces to the
O.D. of the incoming pipe.
Glue the seams on the
reducing sections.
Slit in the throat, apply
adhesive, allow to tack dry,
then fit.
13
Installing Armafix insulated pipe supports
Select an Armafix
insulated pipe
support to fit the
pipework being
installed. The thickness of the support
insulation should be
at least equal to the
design thickness of
the insulation of the
pipework.
14
The insulated pipe
support is fitted
around the pipe at
intervals determined
by the pipe diameter
and location. The
self-adhesive strip
is then exposed and
closed to complete
the vapour barrier.
A standard pipe
support bracket is
fitted around the outer
aluminium shells of
the pipe support.
No additional vapour
barrier or insulation is
required to maintain
the integrity of the
insulation system.
During the installation
of Armaflex insulation,
wet-seal the joins in the
Armaflex at both ends
of the Armafix pipe
support with Armaflex
520 adhesive.
Seal the Armaflex
pipe insulation to the
Armaflex within the
Armafix pipe support
in the normal way.
Ensure that the
pipe insulation is
installed under slight
compression so that
no weak points occur
in the glued seams or
butt joints.
Field of Application:
Armafix insulation pipe supports are recommended
for use where “thermal bridging” should be avoided.
This is very important in refrigeration and chilled water
installations where there is a possibility of condensation
occurring. Special attention is necessary to ensure that
the integrity of the system is maintained with regard to:
(a) The design thickness of insulation.
(b) The vapour barrier.
Thermal Conductivity Value:
• A property of the material dependent only on
temperature.
• Not affected by the thickness of the material.
• Measured in W / (m.K) = Watts per metre per
degree Kelvin.
• For thermal insulation materials, low thermal
conductivity values are better.
To avoid thermal bridging there should be no direct
contact between the pipe and its fixing. This means
that the insulation support system should be used
that has a high resistance to compression and low
thermal conductivity.
15
Installing Armafix insulated pipe supports
The value is used to calculate the quantity of heat
which is transferred through a given thickness of
material. Thus heat loss through the insulation material
depends on thermal conductivity and thickness.
The selection of pipe insulation supports for low
temperature installation, for the prevention of
condensation, we could determine that the product
should have :
Thermal insulation materials – typical values:
•
•
•
•
•
Insulation material
Class O Armaflex
Wood
Plastic
16
W / (m.K) at 0°C
0.035
0.400
0.200 – 0.400
Low thermal conductivity
Compression resistant
Vapour barrier
Ease of installation
Meet local fire regulations
Where Armaflex product is installed, the use of Armafix
pipe supports is the perfect solution on cold installations
for the prevention of ice and condensation. However
when Armafix pipe supports are not selected the
following instructions are imperative:
• Ensure that the Armaflex is fitted tight to the support,
with no air gaps present and vapour sealed with
Armaflex adhesive.
• Install Armaflex self adhesive tape to the butt joint
where the Armaflex and the support meet. Ensure
the surface of the butt joint is free from dust before
installing the Armaflex tape.
17
Installing Armafix insulated pipe supports – multi-layer
Armaflex multi-layer applications:
When the Armaflex wall thickness is greater than the
Armafix pipe support (25mm) the following procedures
could be implemented, ensuring that the vapour seal
is maintained throughout the pipework installation.
Method 1.
• Install first layer of Armaflex as recommended on
page 14.
• Install second layer of Armaflex tube or sheet over
the first layer, butting up to the pipe support fixing.
Seal with Armaflex adhesive on the under-face of
the insulation to provide the vapour barrier.
• In most cases the support fixing would be flush with
the Armaflex, leaving a bare face exposed. This bare
face could be bridged over with a strip of Armaflex
sheet or half an Armaflex tube, thus covering the
exposed face. All seams and joints must be sealed
with Armaflex adhesive.
18
Method 2.
Where pipe-support fixing brackets can be installed
after the application of the Armaflex installation, this
alternative practice should be used:
• Determine the location of the Armafix pipe supports
to be installed. Fix as described on page 14,
without the fixing support bracket.
• Install second layer of Armaflex to the pipework,
covering the entire pipe support (see page 21).
Note: Stagger all joints and seams and seal all joints.
• Install two half moon metal sleeves over the outer
diameter of the Armaflex, directly in line with the
pipe-support on the underside of the second layer
of Armaflex. This will prevent pipework load from
crushing the Armaflex, thus preventing insulation
thickness reduction, which could lead to condensation
problems.
Note: A heavy gauge galvanised sheet would be suitable.
19
Insulating large pipes with Armaflex sheet
Determine the circumference
of the pipe!
Important:
Always measure with a strip
of Armaflex of the thickness
to be used for the insulation.
Warning:
Do not stretch the strip.
20
Cut Armaflex sheet to the
required size – apply Armaflex
adhesive to the cut surfaces in
a thin layer, allow to touch dry.
Press together at the ends
and then in the middle.
Close the entire seam
starting from the middle.
Multi-layer insulation of pipework
a
The inside diameter of the second oversize tube
should be selected according to the maximum
outside diameter of the first layer.
b
If the outer diameter of the first insulating layer is
large, we recommend that the second layer be made
with sheet, since this can be adapted exactly to the
outside diameter of the first layer.
The ends of the tube or sheet of the second layer
should be glued to the under layer of Armaflex.
Warning: Stagger all joints and seams
21
Multi-layer insulation –
pipes and flat surfaces
• In the case of double-layer insulation the first and
second layers should be glued over the entire surface.
DO NOT apply only spots or strips of adhesive.
• The butt and longitudinal seams of the second
layer must always be positioned offset to the first
layer. The Armaflex surfaces of the first layer
should be clean, dry and free from contamination.
Armaflex cleaner can be used when oil or grease
are present. CAUTION: You must ensure that the
underlying glued seams have cured for 36 hours,
before using the Armaflex cleaner.
Insulating pipes with Armaflex sheet
The complete Armaflex range of tube is available for
pipes with an outer diameter up to 114mm. Larger
pipes and ducts as well as tanks are insulated with
Armaflex sheet, and full-surface gluing is needed for
pipes with an outer diameter above 600mm (see table
on page 23).
A number of pipes for which tube is available are
also insulated with sheet for various reasons. Care
should be taken to ensure that the stresses in the
seams, caused by the bending in the sheet, do not
become too high.
These stresses rise with an increasing thickness of
insulation and decreasing pipe diameter, therefore,
we recommend that only thicker sheet material is
used on pipes with a larger diameter. In addition, the
ambient temperature during installation has a great
effect on the stresses.
22
Details on the installation of sheet material at
ambient temperature ≥ 5°C
Sheet thickness
Pipe OD
F
H
K
M
R
T
V
9 mm
13 mm
16 mm
19 mm
25 mm
32 mm
50 mm
≥ 88.9
•
•
•
•
≥ 114
•
•
•
•
•
≥ 168
•
•
•
•
•
•
≥ 600
•
•
•
•
•
•
mm
•
23
Flat surface insulation with self-adhesive Armaflex sheet
24
Check ambient temperature.
Installation should take place
between 10°C and 35°C.
Clean down all flat surfaces.
If necessary, use Armaflex
cleaner.
Measure correct dimensions.
Cut Armaflex sheet to size.
Peel back release paper.
Line up sheet and press
firmly to activate adhesive.
Align material.
Continue to line up and press
whilst slowly removing release
paper.
At butt joints allow 5mm
overlap for compression.
Apply a wet seal application
to the compressed seam.
25
Flat surface insulation with Armaflex sheet and Armaflex adhesive
Clean all surfaces using
Armaflex cleaner to remove
grease, oil, dirt, etc.
Measure surface
dimensions and cut
Armaflex sheet to size.
Note: Add 5mm so that
material is fitted under
compression.
26
Spread a thin film of
adhesive onto the back of
the Armaflex sheet… and
then onto the metal surface.
When the adhesive is tack
dry (fingernail test) place
Armaflex sheet in position
and press firmly to achieve
a good bond.
Insulate the two opposite
sides of the duct first,
then the remaining sides
are measured, making
due allowance for the
thickness of the Armaflex
sheet already installed.
Apply Armaflex adhesive as
before, allow to dry and press
firmly into position.
Apply an additional wet seal
along edges.
The cut sheets should be
positioned so that there is
a 5-10mm overlap. When
pressed together the material
is under compression and is
not stretched.
27
Flat surface insulation with Armaflex sheet and Armaflex adhesive
Wet seal adjacent edges of
Armaflex…
28
and the job is complete.
Flat surface insulation with Armaflex sheet and Armaflex adhesive
Bracket and flange covers for air ducts
29
Surface insulation of large vessels and tanks
using Armaflex sheet and Armaflex adhesive
do not glue
push in
wet bonding
Armaflex sheet layout for large vessels and tanks
Note: ensure that sheet joints are staggered.
30
Vessel and tank dome ends using Armaflex sheet
Curve length
Glue over complete surface
Armaflex strip
* approx. 5 cm
above weld seam
* Size applies for tanks up to a max. Ø of 1.5 m
The size increases with an increasing tank Ø
trip =
flex s
Arma
nk
Ø ta
31
Handling Armaflex sheet material correctly for vessels and tanks
1 Draw up a cutting schedule. Work out the most
efficient way of covering the surfaces using Armaflex
sheet (2 x 0.5 metre) or continuous roll (1 metre width
and length 4-15 metres dependent upon the thickness).
2 Provide an allowance of an additional 5mm on all
dimensions when cutting from Armaflex sheet or roll.
3 Apply Armaflex adhesive first to the insulation before
applying adhesive to the metal surface.
4 Always make compression joins. On curved surfaces,
measure the circumference with a strip of Armaflex
of the same thickness to be used for the insulation,
including any surface finish. Do not stretch the strip.
5 All seams are joined wet. Leave about 30mm without
an adhesive coating on the Armaflex surface. Attach
the connecting sheet with adhesive and with 5 mm
overlap. Then press in the overlapping butt join to
give additional compression.
32
6 Where multi-layer insulation is installed use Armaflex
cleaner, after 36 hours (see page 22) to remove any
talc, chalk, dirt, grease and moisture from the surfaces
to be joined. Stagger all seams and butt joins on
the second layer relative to the first layer.
7 Where complex shapes are to be insulated, the shape
of the body is outlined with chalk and this may be
transferred directly to the Armaflex sheet by pressing
the flexible material against the metal surface so that
the chalk is transferred. Cut along the chalked line with
a sharp knife to obtain a good fit for the Armaflex.
8 Armaflex used outdoors will require additional
protection against UV radiation. We recommend the
use of Armafinish FR paint (see page 76).
9 HT Armaflex insulation does not require painting
when used outdoors.
Bend with 90° angle using Armaflex tube
Template
Note: Use the Armaflex template located on each tube box.
33
Bend with 45° angle using Armaflex tube
Template
*
* The Ø details to achieve the 45° angle are approximate values!
Note: Use the Armaflex template located on each tube box.
34
Segment bend with 1 middle part using Armaflex tube – 2+1
Template
Note: Use the Armaflex template located on each tube box.
35
Segment bend with 2 middle parts using Armaflex tube – 2+2
Note: Use the Armaflex template located on each tube box.
36
Segment bend with 3 middle parts using Armaflex tube – 2+3
Note: Use the Armaflex template located on each tube box.
37
T-piece using Armaflex tube
Note: Use the Armaflex template located on each tube box.
38
Angle T-piece using Armaflex tube
Note: Use the Armaflex template located on each tube box.
39
Crosspiece joint using Armaflex tube
Consists of two 90° angle pieces
Note: Use the Armaflex template located on each tube box.
40
Swept T-piece using Armaflex tube
Further fabrication of two segment bend with one middle part
Note: Use the Armaflex template located on each tube box.
41
Y-tube using Armaflex tube
Further fabrication of the 45° bend (2 times) and the
90° bend (once)
Note: Use the Armaflex template located on each tube box.
42
Pipe reducer using Armaflex tube
Pipe reducer to be insulated
Cut out segments
Cut to size – allow
compression of
5mm at each end
Glue seams with
Armaflex adhesive
Slit fitting on the
flat side
Install and glue
seam and end joints
43
Two part bend using Armaflex sheet – option 1 – site application
R1
Establish the inside radius, R1,
by dropping a perpendicular
line to meet a horizontal line
from the outside of the two
welds. The point where these
two lines intersect gives the
origin for the radius, R1. This
is the throat radius.
44
Measure in a 12mm
trimming allowance along
both vertical and horizontal
edges then transfer R1 to
the sheet as indicated.
Determine the circumference
of the pipe using a strip of
Armaflex of the thickness
to be installed.
Warning: Do not stretch
Halve the pipe circumference
and transfer this dimension
to the Armaflex sheet.
Mark out the two arcs from
the intersection of the trim
lines.
Cut out the first half-section
of the elbow.
Use the first half-section as a
template to cut out the second
half-section of the elbow.
Place the sections together
with the rough surfaces
inwards. Apply Armaflex
adhesive to the outer edges.
45
Two part bend using Armaflex sheet – option 1 – site application
Allow the adhesive to tack
dry (fingernail test) then
press the two sections
together at one side to
make a short seam.
46
Next, press the opposite
sides together, also making
a short seam. Repeat
alternately closing 50-75mm
at a time on each side,
working towards the centre.
Press the remainder of the
joint firmly together.
Turn the assembly over
and press the seam firmly
together from the inside as
well, so that a good adhesive
joint is achieved across the
entire wall thickness.
Apply Armaflex adhesive to
the inner joint edges.
Place the insulation cover
over the pipe bend. Allow
the adhesive to tack dry
then press the joint faces
firmly together.
Trim both ends of the
insulation to give a square
edge, using a metal strip or
clip if necessary, to achieve
a right angle with the pipe.
Wet seal to pipe insulation,
fitted under slight
compression, to complete
the bend.
47
2-part bend using Armaflex sheet – option 2 – bench fabrication
Armaflex
strip
Armaflex
strip
Pipe circumference (U)
‘t = insulation thickness
48
Valve coverings using Armaflex sheet – body
Length including face plates
Armaflex
strip
Face plate
Sheet metal or plastic
reinforcement possible
Armaflex
strip
A = circumference of flange or face plate
49
Valve coverings using Armaflex sheet – body
Small heating and plumbing valves or stopcocks may be
insulated using the techniques detailed on page 38.
The following section gives the general techniques for insulating
larger valves and gate valves.
On chilled water or refrigeration applications it is recommended
that the valve body is packed with strips of Armaflex insulation
stuck onto the valve body with Armaflex adhesive.
50
Insulate the pipe as far as
the flange.
Determine the diameters of:
a) the Armaflex insulated pipe
b) the flange
Mark out and cut circles of
the correct diameter.
Measure the height between
the outer faces of the two
rings.
Determine the circumference
of the rings.
Important:
Always measure with a strip
of Armaflex of the thickness
to be used for the insulation.
Transfer the height and the
circumference to the Armaflex
sheet and mark on the cutouts for the spindle neck.
Apply a thin coat of Armaflex
adhesive to all surfaces of
the valve cover. Allow to
tack dry (fingernail test), fit,
then press together firmly.
Warning:
Do not stretch the strip.
51
Neck-T / Pipe-T using Armaflex sheet
Armaflex
strip
Circumference of face plate
Armaflex
strip
52
Measure the height of the
spindle housing flange…
…and its width, and make
up an end disc.
Cut the disc through at one
side, apply adhesive to the
cut edges, allow to tack dry.
Join the end disc after placing
it over the spindle neck.
53
Neck-T / pipe-T using Armaflex sheet
Measure the circumference
of the end disc with a strip
of Armaflex and transfer the
measurement to the sheet
material.
54
Mark off the circumference
into 4 equal sections.
Measure the minimum and
maximum depths of the
spindle housing including
the thickness of the
Armaflex end disc.
Transfer these heights to the
Armaflex sheet.
Using the difference between
the two heights as a radius,
mark out 5 arcs round the
intersections of the lines,
and join the arcs with a
continuous line.
Cut out the shaped section
of sheet.
Chamfer away the inside
surface at the highest point
(where the sheet rests
against the side of the
valve body).
Apply adhesive to the
longitudinal seam, allow to
tack dry, then seal round the
spindle housing.
55
Neck-T / pipe-T using Armaflex sheet
Apply adhesive using the wet
seal method to seams 1 – 4.
D.Boxes, using Armaflex
sheet, can also be used to
insulate valves.
56
The valve cover is now
complete.
Offset angle / pipework bend angle joints using Armaflex sheet
Armaflex
strip
Pipe circumference
Armaflex
strip
57
Offset angle / pipework bend angle joints using Armaflex sheet
Armaflex
strip
Pipe circumference
Armaflex
strip
58
The following illustrations show the various stages of work when insulating a mitre angle or bevel joint in a pipe.
The procedure when insulating a right angle pipe joint is effectively the same.
59
Offset angle / pipework bend angle joints using Armaflex sheet
Determine the circumference
of the pipe.
Important:
Always measure with a strip
of Armaflex of the thickness
to be used for the insulation.
Warning:
Do not stretch the strip.
60
Transfer the circumference
to the Armaflex sheet and
mark in the centre line.
Measure the outer…
…and inner height of the
mitre joint.
Transfer the heights to the
Armaflex sheet.
Measure the half-circumference with dividers…
…and mark out 3 arcs.
Join the arcs with a
continuous line.
61
Offset angle / pipework bend angle joints using Armaflex sheet
Cut along the line. When
repositioned by 180°, the
upper and lower sections
produce…
62
…the two parts of the mitre
joint.
Apply Armaflex adhesive to
the longitudinal seam, then
to the connecting seam.
The insulation is now
complete.
Strainers, strainer valves and inclined seat valves using Armaflex sheet
The following series of illustrations show the various phases in
the insulation of a strainer.
The work involved in insulating a strainer valve or an inclined
seat valve is similar (some measurements need to be extended)
except that they will also require an end disc, made and installed
as shown on page 54.
Insulate the pipes as far as
the flanges. Measure and
install two Armaflex rings
on the outer faces of the
flanges, but do not attach
them to the Armaflex tube
with adhesive at this stage.
Apply a strip of Armaflex
around the strainer body to
support the fitting cover.
Chilled water and refrigeration
strainers should be fully packed
with further pieces of Armaflex
adhered to the strainer body
to fill any air gaps.
63
Strainers, strainer valves and inclined seat valves using Armaflex sheet
Determine the length of the
circumference.
Important:
Always measure with a strip
of Armaflex of the thickness
to be used for the insulation.
Warning:
Do not stretch the strip.
64
Transfer the circumference
to the Armaflex sheet.
Measure the distance over
the outer faces of the two
Armaflex rings you have
positioned next to the flanges.
Measure the size of the
strainer cut-out and the
distance between the
strainer and the outer face
of the upper ring.
Measure the distance from
the strainer to the outer face
of the lower ring.
Transfer these measurements
to the Armaflex sheet and
mark the cut-out needed for
the strainer.
Attach the insulation sheet to
the strainer with adhesive.
Measure the three outer sides
of the strainer cover.
65
Strainers, strainer valves and inclined seat valves using Armaflex sheet
Transfer the combined length
of these three sides to the
Armaflex sheet.
66
Measure the distance from the
strainer cover to the insulation
round the strainer body.
Using this height as a radius,
mark out arcs from each end
and…
…join the uppermost points
on each arc together.
Cut out the remaining section
of sheet…
…and chamfer it away where
it is to touch the insulation
round the strainer body.
Attach this section first to the
strainer body insulation with
adhesive then…
…to the strainer cover. This
completes the basic fitting
cover for a strainer.
67
Flanges using Armaflex sheet
The following section gives
the installation techniques
for insulating flanges.
On chilled water or refrigeration
applications it is advisable to
pack the gaps between the
nuts with strips of Armaflex
insulation.
68
Using a pair of callipers,
determine the diameters of:
a) the pipe with Armaflex
insulation installed
b) the flange
Transfer these measurements
to a piece of Armaflex sheet.
Mark out two concentric
circles with dividers. Repeat
on a second piece of sheet.
Cut out two Armaflex rings.
Cut through the rings at one
side and after placing them
over the insulated pieces
join together with adhesive.
Determine the circumference
of the flange.
Important:
Always measure with a strip
of Armaflex of the thickness
to be used for the insulation.
Warning:
Do not stretch the strip.
Cut out the central strip which measures
the circumference of the ring by the width
from the outer face of one Armaflex ring
to the outer face of the other Armaflex
ring. Apply adhesive to edge of strip.
Press the strip joint firmly together,
starting from the outer ends.
Make wet seal joints by applying
adhesive between the two
Armaflex rings and the joining
strip, and between the rings and
the insulation on the pipe. On
heating installations only, it may
be acceptable to rely on a pushfit rather than an adhesive seal
and thus allow access to nuts
for maintenance.
69
Concentric reducer (equal) using Armaflex sheet
Ø pipe
Armaflex
strip
Ø pipe
‘t = insulation thickness
70
Pipe circumference
ArmaflexStrip
Essentric reducer (flat back) using Armaflex sheet
Armaflex
strip
Armaflex
strip
Largest pipe diameter
71
Insulating a pump using Armaflex sheet
72
Armaflex 520 adhesive
Armaflex 520 adhesive has been specially developed
to bond Armaflex, a flexible closed-cell elastomeric
nitrile-rubber insulation. It joins the surfaces to be
bonded reliably and safely, at medium temperatures
of up to +105°C. The bond is resistant to weathering
and ageing. (For HT Armaflex, use Armaflex HT 525
adhesive – see page 74).
Preparing for work
The surfaces to be joined must be clean, dry and free
from contamination. If gluing on bases which already
have a coat of oil based paint check the compatibility.
Shake the adhesive well before use and stir. Ideal
application temperature: +20°C. Not below 0°C.
At temperatures below 5°C or high humidity above
85%, increased condensation may appear on the
surfaces to be joined or adhesive film (see Hot Climates,
page 79). Do not work on plants that are in operation.
Application
Pay attention to the Armaflex installation instructions.
Remember: apply the adhesive using a brush with
firm bristles. Use a spatula or sheepskin roller for
larger areas. Curing time 36 hours.
Pipe insulation
Armaflex 520 adhesive should be applied in a thin
layer on both surfaces to be joined. When the
adhesive is no longer stringy to the touch (open time
depends on the ambient conditions) the surfaces to
be joined should be pushed together with a slight
pressure and then pressed firmly together.
Vessel / tank insulation (full surface gluing)
Using Armaflex 520 adhesive, follow the installation
instructions on page 32.
Storage
Keep cool wherever possible, but free from frost.
Damage due to frost can be reversed by storing in
warm conditions, or for immediate use by using a
bucket of hot water. Shelf life approx. 1 year.
73
Armaflex HT 525 Adhesive
Armaflex HT 525 adhesive is a two-component glue
which has been developed to bond HT Armaflex
insulation for medium temperatures up to +150°C*.
*For information on temperatures below - 40°C or above +150°C,
please consult our Customer Services Department.
Preparing for work
Before use, add the enclosed hardener to the Armaflex
HT 525 adhesive whilst stirring very carefully. The mixture
of hardener and adhesive can then be used for approx.
8 hours. Keep the tin firmly closed and stir well before
each use. Ideal processing temperature: +15°C to +20°C.
Do not use below 0°C.
Application
The application is the same as for Armaflex 520
adhesive.
74
Note: Due to Armaflex HT 525 adhesive being of
a higher viscosity, with a quicker drying time than
Armaflex 520 adhesive, we recommend the use of
the Armaflex glue gun (see tool list page 5).
Storage
Keep cool wherever possible, but free from frost.
Damage due to frost can be reversed by storing in
warm conditions, or for immediate use by using a
bucket of hot water. Shelf life of Armaflex HT 525
adhesive before adding the hardener: approx. 1 year.
Armaflex cleaner
Armaflex cleaner is a clear, colourless volatile liquid.
It is used for the removal of grease, oils and dirt from
surfaces prior to the use of Armaflex adhesives or
Armafinish FR paint (see page 76). The cleaner may
also be used to clean brushes, tools, etc. which have
become contaminated with Armaflex adhesive.
Cleaning tools
Brushes and equipment which have become hardened
with adhesive may be recovered by soaking until soft.
Metal surfaces
Before installing Armaflex sheet on to ductwork the
surface shall be thoroughly cleaned and degreased
using Armaflex cleaner. The cleaner is applied using
clean lint-free rags and the metal surface allowed to
dry completely before the application of adhesive.
Armaflex surfaces
Where adhesive is being used on the smooth surface
of Armaflex, e.g. in the insulation of valves and other
fittings, it is recommended that the adhesive areas
are cleaned prior to application and allowed to dry
thoroughly.
75
Armafinish FR paint
Armafinish FR is a water-based coating using an
advanced terpolymer resin system. When properly
applied, it is particularly suitable for the protection of
Armaflex flexible thermal insulation against sunlight,
UV radiation and chemical attack. The coating, when
fully cured, maintains the flexibility, resistance to
water vapour and fire performance of the Armaflex
material. Where resistance to damage is a particular
requirement the coating may be further strengthened
using Arma-Chek Web random mesh glass fibre.
Surface preparation
The Armaflex surface should be clean, dry and
free from any oil, grease, organic growth and other
extraneous substances that may affect adhesion
and cure. Surfaces may be cleaned using Armaflex
cleaner, which should be allowed to evaporate
completely before the application of the coating.
76
Application conditions
The coating may be applied if the ambient
temperature is not likely to fall below 5 ºC, and the
relative humidity is below 90%, providing that the
dew point is not exceeded.
Coverage
COAT
l / m2
m2 / l
Wet film / microns
Dry film / microns
1st
0.275
3.6
275
130
2nd
0.275
3.6
275
130
Overall
0.550
1.8
550
260
Where practical the first coat should be in a contrasting
colour to the second coat so that adequate coverage
is obtained by obliterating the substrate. To build up
the required thickness Armafinish FR should not be
brushed out, as with conventional paints, but rather
dabbed on to the surface and lightly smoothed out.
When using a brush, the second coat should be applied
at right angles to the first, if it is practical to do so.
Drying time
Under normal conditions, Armafinish FR paint should
be dry within 1 – 2 hours. Low temperature and / or
high humidity will progressively increase the time for
the coating to dry but will not affect the ultimate cure.
The second coat may be applied as soon as the first
coat is thoroughly dry and within 3 days of the first
coat application.
Service temperature
-40 ºC to + 60 ºC.
Storage
Store in frost-free conditions in tightly sealed
container. Keep away from sources of heat.
Shelf life
2 years in unopened containers, when stored as
directed above.
Reinforcement
To reinforce the surface use Arma-Chek Web random
mesh glass fibre which is embedded into the first
layer of coating while it is still wet. Both coats should
be applied at double the thickness recommended
above (i.e. overall coverage rate of less than 1 square
metre per litre). The second layer should be applied
so that the Arma-Chek Web is virtually obliterated.
Please note that the drying time will be extended.
It is only practical to reinforced Armafinish FR paint
over small areas. Where it is required to reinforce
large areas it is preferable to use the Arma-Chek
system. Please consult our Customer Services
Department for further information.
Application
May be applied by brush, short pile roller or airless
spray equipment (at 2500-3000 psi with 19-20 thou
tip size).
77
Armafinish FR paint – coverage chart
Based on two coats at 3.6 square metres per litre per coat.
Pipe
dia.
15
22
28
35
42
48
54
60
67
76
80
89
93
108
114
140
168
214
273
324
78
6
0.05
0.06
0.07
0.08
0.09
0.10
0.12
0.13
0.14
0.15
0.16
0.18
0.18
0.21
0.22
0.27
0.31
0.39
0.50
0.59
INSULATION THICKNESS
9
13
19
25
Litres per linear metre
0.06
0.07
0.09
0.11
0.07
0.08
0.10
0.13
0.08
0.09
0.12
0.14
0.09
0.11
0.13
0.15
0.10
0.12
0.14
0.16
0.12
0.13
0.15
0.17
0.13
0.14
0.16
0.18
0.14
0.15
0.17
0.19
0.15
0.16
0.18
0.20
0.16
0.18
0.20
0.22
0.17
0.19
0.21
0.23
0.19
0.20
0.22
0.24
0.19
0.21
0.23
0.25
0.22
0.23
0.25
0.28
0.23
0.24
0.27
0.29
0.28
0.29
0.31
0.33
0.32
0.34
0.36
0.38
0.40
0.42
0.44
0.46
0.51
0.52
0.54
0.56
0.60
0.61
0.63
0.65
32
0.14
0.15
0.16
0.17
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.27
0.27
0.30
0.31
0.36
0.40
0.49
0.59
0.68
Hot climates – high ambient temperature and relative humidity
Alternative installation instructions for Armaflex and
Armaflex 520 adhesive in areas with a high relative
humidity and high ambient temperature.
High atmospheric humidities and temperatures lead
to faster evaporation of the solvent in the Armaflex
adhesive. This means that a film of moisture may
appear on the surface of the adhesive. Consequently
the reliability of the adhesive seam will not be assured
as the surfaces to be joined may not bond together.
Under these special conditions, the following points
should be observed as an alternative to our
installation instructions:
• Apply Armaflex 520 adhesive as normal in a thin
film on both sides and avoid nests of adhesive.
Unlike normal bonding, the surfaces to be glued
should be pressed together whilst wet. Remember
that adhesive can only be applied to a limited area,
depending on the atmospheric humidity, temperature,
material thickness and practical installation conditions.
We recommend a tube length of around 1 m as a
reference figure.
• To prevent the wet seams from coming apart on
account of possible tensions within the material
and the enclosed solvent, the seams should
be held in place immediately after bonding with
Armaflex adhesive tape crosswise to the glued
seam every 20 cm or so.
• Only start the insulated plant at the end of the
adhesive’s breathing time (approx. 36 hours).
79
Installation of Armaflex sheet to foil faced mineral wool
Installation type:
Pipework, diameters above 500mm – tanks, vessels,
ductwork and flat areas.
Application procedure:
Prior to the application of the Armaflex sheet to foil
faced mineral wool, the following procedures should
be implemented:
1 Ensure that the high temperature non-Armaflex
insulation products are installed with a tight fit and
without gaps being present on all seams and joints.
3 Ensure the foil surface is clean, dry and free from
other contaminates. Check that the foil has not
delaminated from the mineral wool’s surface and is
secured.
4 Install the Armaflex sheet as normal (see pages
26-28). On installations where the outside diameter
of the insulated pipework is 500mm and above,
all-over adhesive coverage is required on both
insulation surfaces. This method of adhesive
coverage should also be used on all flat surfaces.
5 Ensure all joints and seams are staggered.
2 Class O reinforced foil faced sheeting should be
applied to the mineral wool surface. Ensure
adhesive is applied to both the foil sheet and the
mineral wool surface. Ensure all over coverage on
both surfaces. Allow the adhesive to fully cure.
80
Important Notes:
• Please contact the mineral wool supplier for
verification that the interface temperature does not
exceed the temperature range of the Armaflex
material being specified.
• Always check the strength of the adhesive bond
to the mineral wool surface before installing Armaflex.
If the mineral wool is sagging or dropping away when
fixing Armaflex directly onto it, please contact the
mineral wool supplier.
• Only use Armaflex adhesive when installing Armaflex
insulation. Where temperatures of +85°C and above
are present always use HT Armaflex insulation and
Armaflex HT 525 adhesive.
• Where this method of installation is specified in
offshore or external environments for the prevention
of Corrosion Under Insulation, we would advise that
the installation data contained within the Armacell
Arma-Chek Specification and Application Manual is
followed.
• Seek advice from the mineral wool manufacture on
the adhesive to be used for foil-faced sheeting.
81
Installation of Armaflex sheet to aluminium foil faced
and plain cellular glass products
Installation type:
Flat surfaces, vessels and pipework – diameters
above 500mm
Armaflex Product Type:
HT Armaflex
3 Ensure the adhesive is applied to both the foil sheet
and cellular glass surfaces. Ensure all over coverage
on both surfaces with no dry spots present.
The following procedures should be implemented to
install HT Armaflex sheet to cellular glass type products.
4 Allow the adhesive to fully cure to the manufacturer’s
recommendations.
1 Ensure that all of the cellular glass fixing bands are
securely in place and all seams and joints are
sealed with the recommended joint sealant.
82
2 Install the aluminium foil sheeting to the cellular
glass using a recommended adhesive.
Application of Armaflex HT sheet:
1 Before the installation of the Armaflex HT sheet to
the aluminium foil covered cellular glass, ensure
the foil surface is clean, dry and free from any
contamination.
2 Measure surface dimensions, and cut to size,
allowing for the Armaflex sheet to be staggered
with the cellular glass seams and joints.
3 Apply a thin film of Armaflex 525 HT adhesive to
both the surface of the Armaflex and the foiled
covered cellular glass substrate, using either a
brush or adhesive spreader. When the adhesive is
tack dry (fingernail test) place the Armaflex HT
sheet in position and press firmly to achieve a
secure bond. Ensure no trapped air pockets are
present during this procedure.
so that there is 5-10mm overlap on all butt joints.
When pressed and joined together the material
should be under compression and not stretched.
5 All seams and joints to be wet sealed with Armaflex
525 HT adhesive (see page 74).
Note: Under no circumstances should self-adhesive
tape be used on any of the Armaflex seams and
joints during and after the Armaflex installation.
6 When multi-layered Armaflex sheet is required, i.e.
2 x 25mm sheet applications, follow procedures
2–5 above, and remember to stagger all seams
and joints.
Note: For locations that have high ambient
temperatures, it is advisable to limit the size of
Armaflex sheet fixing area to 1 sq. metre at a time
4 Continue to install the Armaflex sheet onto the foil
surface. The Armaflex sheet should be positioned
83
Installation of Armaflex sheet to aluminium foil faced
and plain cellular glass products
Where the use of aluminium is not included on the
installation, the following procedures shall be
undertaken:
• Before the application of the Armaflex sheet, the
open cell structure of the cellular glass outer
substrate should be sealed with a recommended
sealant. If this is not available, then the cellular
glass should be sealed with the Armaflex HT 525
adhesive. The adhesive should be allowed to cure
for a minimum of 36 hours. This procedure will
allow the open cells of the cellular glass to resist
take up of further applications of Armaflex HT 525
adhesive, when installing Armaflex to the cellular
glass substrate.
84
• Care should be taken not to damage the cellular
glass surface when installing the adhesive for
sealing purposes; this should be done with either a
soft paintbrush or a soft thick paint roller. The
adhesive should also cover the insulation fixing
bands that hold the cellular glass in position.
• Follow the application of Armaflex HT sheet (see
page 83) excluding terms relating to aluminium foil
sheeting.
Armaflex installation with trace heating cable
In situations where the trace heating cable operating
temperature exceeds +105°C when installing with
Armaflex tube and +85°C on Armaflex sheet materials
(pipework ID 600mm and above), the following points
should be implemented.
• Thickness of tape to be a minimum of 90 microns
1 Self-adhesive aluminium foil tape should be applied
directly to the surface of the installed cable, prior to
the installation of the Armaflex tube or sheet.
Installation Procedures:
Prior to the application of aluminium foil tape to the
cable, ensure the surfaces are clean and dry and
free from dust, dirt, oil, grease and moisture.
2 The aluminium foil tape should meet the following
requirements:
• Reputable manufacturer (eg: Idenden)
• Tape width 100mm
• Class 1 / Class O fire rating
Check the cable is fully secured to the pipework
installation before applying the foil tape. Install foil
tape directly over the cable surface.
• Bright aluminium faced, standard purity, being dead
soft. Note: Reinforced type should not be used
Ensure the tape is rubbed down to the cable and
pipework surfaces.
• Pure acrylic adhesive backing
Note: The thickness of foil tape shall be 90 microns
(see specification above), 3 layers will be required to
meet this micron thickness.
• Temperature range of tape -10°C to +150°C (minimum)
85
Armaflex installation with trace heating cable
Ensure the entire trace heating cable installation is
covered with the foil tape, to the recommended
micron thickness.
On the longitudinal adhesive seam joint of the
Armaflex tube or sheet, avoid having the seam in
direct contact with the foiled trace heating cable.
Application of Armaflex tube or sheet:
On completion of the applied foil to the trace heating
cable, follow current Armaflex installation specification
procedures, with the addition of the following:
The adhesive bonded seam should be set 90° away
from the cable (where practical). Ensure all butt joints
are fitted under compression prior to wet sealing.
Note: The Insulation material should not be hollowed
out to accommodate the trace heating cable. When
installing Armaflex tube, use the next bore size up to
accommodate the trace cable. On larger bore pipework
where Armaflex sheet is used, measure the pipe
circumference over the heat trace cable,covered in
foil, using a strip of Armaflex of the same thickness
and type.
86
Pipework Termination Points:
Ensure the Armaflex and trace cable is sealed to the
pipework with Armaflex adhesive.
Quantity of Armaflex sheet for pipework fittings
To determine the quantity of Armaflex sheet required for
pipework fittings, using 09mm – 32mm thick products.
For nominal ID bore pipework size range: 80 – 500mm
Pipe size:
ID mm / in OD mm
Metre Run:
sheet req.
90° Bend:
sheet req.
45° Bend:
sheet req.
Equal T:
sheet req.
Flange:
sheet req.
Gate Valve:
sheet req.
N/R Valve:
sheet req.
080 / 03 089
0.436
0.254
0.127
0.09
0.21
0.403
0.403
100 / 04 114
0.515
0.354
0.177
0.10
0.29
0.505
0.505
125 / 05 140
0.597
0.576
0.238
0.12
0.35
0.72
0.72
150 / 06 169
0.688
0.663
0.316
0.14
0.40
0.93
0.93
200 / 08 219
0.842
0.949
0.474
0.21
0.55
1.10
1.10
250 / 10 273
1.02
1.38
0.690
0.26
0.79
1.40
1.40
300 / 12 324
1.18
1.85
0.925
0.40
0.97
1.80
1.80
350 / 14 356
1.28
2.17
1.085
0.43
1.17
2.31
2.31
400 / 16 406
1.43
2.75
1.375
0.48
1.42
2.90
2.90
450 / 18 457
1.60
3.41
1.71
0.54
1.70
3.60
3.60
500 / 20 508
1.75
4.10
2.05
0.59
2.05
4.40
4.40
Figures based upon single items – per square metre of Armaflex sheet.
87
Quantity of Armaflex sheet for pipework fittings
Guidance notes:
• Flange and valve estimates relate to PN.16 Table (f)
product type. No allowance has been made for the
flange/valve body length to be increased for
maintenance.
• 90 degree bends based upon standard BS standard
long radius product type.
• 45 degree bends based upon standard BS standard
radius product type.
• The equal T length is based on being 200mm long.
• Estimates are based upon the fabrication
techniques contained in this manual. No margin
has been allowed for any waste product. It is the
responsibility of the customer to allow for such
margin during the estimation process.
88
Quantity of Armaflex tube for pipework fittings
To determine the quantity of pipework fittings that
can be achieved using Armaflex tube product.
For nominal ID bore pipework size range: 12 – 100mm
Pipe size
ID OD
90° Elbow
45° Elbow
2+1 Bend
segments
2+2 Bend
segments
3+2 Bend
segments
T-Piece
Reducer
012 015
5
7
5
4
5
10
10
015 022
5
7
5
4
5
10
10
020 028
5
7
5
4
5
10
10
025 035
5
7
5
4
3
10
10
032 042
5
6
5
4
3
10
10
040 048
5
6
5
4
3
7
7
050 060
4
6
4
3
3
7
7
065 076
4
6
4
3
2
5
5
080 089
4
5
4
3
2
5
5
100 114
3
5
3
2
2
5
5
Figures based upon single items – per metre of Armaflex tube.
89
Quantity of Armaflex tube for pipework fittings
Guidance notes:
• All fittings with the exception of T’s and reducers
have a throat length of 50mm.
• All quantity totals above are complete totals, with a
very small amount of waste product. However,
these small amounts can be used to fabricate
fittings as required.
• All fittings with the exception of T’s and reducers
are based upon angle cuts of 90°, 45°, 22.5° and
11.25°. Examples are based upon the fabrication
techniques contained in this manual and the
templates on each Armaflex tube carton.
• The above figures should be used for estimation only.
No responsibility can be taken for fabrications
produced by our customers that do not match
these quantities.
90
Armaflex fabrication and installation – tube & sheet products
Labour installation time norms – including adhesive and tack time for single items.
Pipe
size
ID
Metre
run:
mins
Elbow
90°
bend
45°
bend
T-piece
Reducer
Valve
on site
Flange
bench
made
D.Box
12 ●
6
3
N/A
3
3
3
5●
10 ■
N/A
25 ●
6
3
N/A
3
3
3
5●
10 ■
N/A
32 ●
6
3
N/A
3
3
3
5●
10 ■
N/A
40 ●
6
3
N/A
3
3
3
5●
10 ■
N/A
50 ●
6
N/A
10 (2+1)
4
4
5
15 ■
10 ■
10 ■
65 ●
6
N/A
13 (2+2)
5
4
6
20 ■
15 ■
15 ■
80 ●
8
N/A
8■
4
4
6
20 ■
15 ■
15 ■
100 ●
9
N/A
10 ■
5
5
10 ■
30 ■
20 ■
20 ■
150 ■
12
N/A
15 ■
8
15 ■
15 ■
40 ■
25 ■
30 ■
200 ■
15
N/A
20 ■
10
20 ■
20 ■
50 ■
30 ■
40 ■
● = in tube material
■ = in sheet material
91
Armaflex fabrication and installation – tube & sheet products
Guidance notes:
• Based on single items, maximum working height of
2 metres above floor level. Times can be reduced if
fitting covers are mass produced.
• Based on 8-hour day.
• Based on labour having high levels of experience
working with Armaflex products.
• Working with the correct type of tools and equipment.
• Time evaluations are inclusive of the allowance for
tack time of the Armaflex adhesive before bonding.
• Fabrication and installation methods based upon
Armaflex guidelines contained in this manual, and
demonstrated at training programmes relating to
the application of Armaflex sheet and tube products.
92
• The figures quoted should be used only as guidance.
The stated figures have been obtained from
application experience. However, Armacell UK
takes no responsibility for fabrications produced by
our customers that do not match these quantities.
Notes:
All statements and technical information are based on results obtained under typical conditions. It is the responsibility of the recipient to verify with Armacell UK Ltd. that the information is
appropriate for the specific use intended by the recipient. The examples and methods shown in this manual are general suggestions which make no claim to be either complete or binding,
since local installation conditions may vary. As we are unable to exert any influence on the actual installation work, we only provide a warranty covering satisfactory and consistent quality
of our insulating material in accordance with our published technical data. Reproduction or copying of this manual either wholly or in part is permitted only with our express permission.
INSTALLATION MANUAL
Armacell UK Limited.
Mars Street, Oldham, Lancs. OL9 6LY
Tel 0161 287 7100 · Fax 0161 633 2685
www.armacell.com · [email protected]
Copyright: Armacell UK Limited
Printed in the UK 000-005-1201-GB (GB)