Installation of UPVC pipes
A.
Method of solvent welded joints:
-
The maitting
surfaces of the spigot and socket must be wiped with
cleaning fluid to remove any adhering and grit.
-
Mark on the
spigot the full depth of insertion into the socket.
Lightly the penetration length of the spigot and the
interior of the socket with emery cloth.
-
Using a clean
rag or absorbent paper and cleaning fluid,
thoroughly clean the matting surfaces of both spigot
and socket. Ensure that no remains on the areas to
be jointed.
-
Apply solvent
cement spairngly in an even layer. To the internal
surface of the socket. Apply solvent cement
liberally to the matting surface of the sipgot. Use
a new inexpensive paint brush of suitable size.
Always lay on the solvent cement lengthwise and not
a circular motion.
-
With the initial
pipe length suitably anchored, immediately push the
spigot and fully home, without turning the pipe. Of
with a rag suplus cement around the outside of the
completed joint.
-
The completed
joint should be disturbed for about five minutes,
after wish it may be handled with reasonable care.
Hydraulic testing to 1/2 times
working pressure may take place 24 hours after
completion of joints, working pressure may be
applied after 8 hours.
Note:
Close the open stin of solvent cement not in use, do not
work near a naked flame and do not mix cleaning fluid
with the solvent cement.
B.
Method of rubber ring joint:
-
Ensure that the
matting areas of sigot socket are throughly clean.
-
access the full
socket depth by simple measurement and mark spigot
accordingly.
-
Apply lubricant
to chamfered spigot and to triple sealing of the
rubber gasket.
-
Accurate axial
alignment of sigot and socket prior to jointing is
important hand feed spigot into rubber gasket until
resistance from the inner sealing section is felt.
-
Complete the
joint by applying leverage to the following socket
end using a timeber block prevent damage.
Note:
If pipes are cut on site, ensure that the new spigot
ends are cut square with a fine toothed saw and are
re-chamfered to half pipe thickness with a coarse file
before jointing.
Approximate consumption of solvent cement, cleaner &
lubricant for 100 joints.
Technical Data of Four Seasons Plast UPVC Pipes
-
Physical Properties
Material : Un plasticed Polyvinyl Chloride
Color : Grey, white, black
or any other color or request
Specific Gravity: 1.24 + 0.02
Standard length: Available in the standard length as per
customer requirement
Pipes are manufactured with solvent joint socket, rubber
Joint socket or plain end.
Flammability : Will not support
combution.
2. Mechanical Properties
Tensile Strength : 492-527 Kg/cm
Impact Strength (Izod) : 4.75-5.24 Joules
(Inch notch charpy)
Impact Strength
Free
Falling : No break
Compressive Strength : 668 Kg/cm
Flexural Strength
: 3.2 * 10 Kg/cm
Elongation at break : >
125%
Water Absorption
: > 4mg/cm
3. Electrical Properties
Volume Resistivity : 10 ohm/cm
Dielectric Strength : > 40Kv/mm
Power factor at 106 cycle : 3.3
Surface Resistance: 10 ohm
4. Chemical Properties
Resistance to sulfuric acid : (0.031)
(+0.316) gm/45 cm
Methylene Chloride Test: Passed
5. Thermal Properties
Softening piont (VSP 5 Dg) 82 deg.C
Co-efficient of linear Expanison : 5 * 10
5/deg. C
Specific heat
: 0.25 cal/g deg. C
6. Toxicity
pb<0.3
mg/L
Sn<0.02
mg/L
Zn<0.01 mg/L
UPVC
Pipes And Elevated Temperatures
-
In Fig. -1- pressure -
Temp. relationship
Ambient variable
Internal Temp. 20 c
For ambient temperature of 40 c, a required working
pressure of 10 bars, requires 10 bar rated pipe.
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2.
In fig. -2- pressure-
Temp. relationship
Ambient temp. 26 c
Internal variable
For a required working pressure of a bars with liquid
temperature of 40c, a 16 bar rated pipe is required
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