Page 119 - RACI

INtRODUCtION 13

Hdpe spacers n

Our spacers Example N
special measurement
WHat are tHey? closing element
RaCI has always supported the customer in the research
and development of the best technical solutions, in order
to best meet their specific needs. By collaborating with
companies operating in the field, in 1975 the innovative system
of our HDPe spacer collars has been designed and patented
for crossing pipes within jacket pipes.
In fact, in many countries the crossings of pipelines located
parallel to the roads or railway lines must be protected by
casing pipe. RaCI spacers allow, for example, to satisfy the
requirements of eN 1594, for the construction of stretches
of pipes/counter pipe in gas distribution pipelines.
the RaCI spacer rings protect pipelines for drinking water,
sewerage, gas and petrochemical fluids in a simple and
effective way.

advantages
• electrical insulation between the pipeline and the casing

pipe, for long-lasting protection against corrosion.
• easy insertion of the main pipe, preventing damage to the

protective coating.
• excellent fixing on the main pipe to prevent horizontal sliding

during insertion.
• Dielectric chemical-resistant material.
• Resistance to thermal shock and stress during insertion to

ensure continuous and lasting support to the main pipe and
its contents.

cHaracteristics
• entirely made of high density polyethylene (HDPe),

no metal connection components are required.
• Modular rings composition system that allows the spacers

to cover a wide range of pipe diameters, thereby
minimizing the stocking quantities.
• easily assembled, by inserting one element into the other.
• low friction coefficient.
• Can be installed on steel, concrete, cast/ductile iron
or plastic pipes.

(*) Usually a ring is composed by the same elements (e.g. M). For special M
measurements where it is not possible to reach the exact circumference
of the pipe, a smaller element like a jolly is inserted (e.g. N) to allow a Example M
proper fitting of the ring around the pipe. As shown here in detail, the two standard element
different elements are considered a “family”.
Ring M + n = Example NM (Family)*
info@raci.it - www.raci.it - Tel. +39 02 262.351
© RACI srl - ISO 9001 - Catalog ed 10/2016