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The method
described below is given as an example. The method of making the joint and
equipment used may vary, provided of course that the principles of
assembling and recommendations specified will be strictly observed.
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Using a
wire brush and a rag, carefully
clean the inside of the socket
particularly the gasket recesses. In particular, remove any
deposits of earth, sand, etc. also clean the spigot of the pipe
to be jointed and the gasket itself. Check the presence of the
chamfer, as well as the absence of any damage on the spigot of the
pipe. (See fig. 1,2 & 3).
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Check
the condition of the gasket and insert it into its recess, with the
lips pointing towards the bottom of the socket. Make sure that the
gasket is correctly compressed all the way round. (See figure 4).
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Coat
with lubricating paste recommended and supplied by SADIP, the spigot
end of the pipe and the exposed surface of the gasket (See fig.
5&6). The gasket recess must not be coated with lubrication paste,
except for small diameter pipes or fitting when problems arise on
fitting the gasket.
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Center
the spigot in the socket and hold the pipes in an position by resting
it on two wedges of tamped earth or better, gravel.
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Push in
the spigot until the first mark disappear inside the socket. The
second mark must still be visible after assembly. (See fig.7).
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Check
that the gasket is correctly in position by inserting the end of a
metal ruler through the annular spigot and socket gap until it touch
the gasket. The ruler must penetrate to the same depth around
the whole circumference.
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Jointing
must be done with well aligned pipes. Make sure that the curvature
after assembly does not exceed the permissible angular deflection of
particular joint.
Figure 7 |
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Figure 1
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