Unique Lining Method
LINED BALL VALVE
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Processing
Polymers such as PFA/FEP by injection moulding is extremely
critical as the process requires close monitoring with
controlled heating and cooling of the assemblies during
the entire moulding stage.
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For this
reason Horizon had set up in the very beginning a full
fledged in-house facility comprising of equipments for
pre-heating the Cast Housings and lining the same using
a semi-automatic special purpose injection moulding
machine with transfer system where injection & transfer
of plasticised material is done under ISO
THERMAL condition. This facility is unique and the only
one of its kind in India and has its own advantages
over the conventional method of lining where Transfer
Moulding System are used.
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The
design for assembling the tooling ensures that the mandrels
are centrally located when assembled inside the Cast Housing
and maintain this position during the entire moulding state.
This ensures that every fitting/cast body will have a uniform
lining thickness and will also ensure zero residual stress.
The
lining technique also ensures that the liner has a very close
fit inside the Cast Housing. which is very important for high
vacuum ratings.
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