I have seen Victaulic pipe couplings used extensively
in chilled water service in shopping centres in
Australia. I have used them for mineral slurries,
water systems and sewerage services above ground.
In all instances I have found the system provides high integrity and reliability.
As for chilled water below ground there is an Australian system that you may find cost compr=etitive. It has beenn developed by a Tyco company here. The pipe material is ABS, to ISO standards not ASTM. Its a different polymer to the one you are used to. The pipe is preinsulated with a foam polyurethane with an outer PE cover. The product is currently being produced for underground reticulation of chilled water in Pakistan.
The ABS is solvent welded so it would negate the need for Victaulic Couplings. Victaulic or flanged connections are available if required.
The company is Tyco Thermoplastic Pipe Systems,
formerley Eurapipe. Phone 61 3 9217 3170 or
<a href="/group/PipingDesign/post?postID=eNOvH0_AgIbbdOQCB-IfnhsVU1UzNccrbOTORLszMRQq7hsFU0r-1yvYgVfmQIIJ_7ZatVHJy6BE6uReJ89FOAHJSNtAjds">3175.nevillep@eurapipe.com.au</a>
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I know every now and then we get into a chilled water
discussion
on the
steam list so please indulge me!
We are presently involved in a large chilled water
project and
have been
asked to review Victaulic or Mechanical grooved pipe
couplings as
a suitable
alternative.
We traditionally use all welded steel construction for
the buried
distribution system or even in-plant chilled water
piping.
Therefore, my knowledge regarding Victaulic is
extremely limited
to smaller
commercial building HVAC design from a former
life.
Has anyone on the List had any good or bad/horror
experiences with
this
product with chilled water pipe couplings that they
are willing to
share?
Any comments on use of grooved pipe for valves in lieu
of flanges?
Any comments regarding its reaction to water hammer as
compared to
steel.
Our system will eventually be around 20,000 tons.
We have about 2 miles of piping trench at 140 psi
supply and close
to 90
psid on the distribution pumps.
Diameters range from 30" to 12" pipes with
water velocities at
about 11 feet
per second.
</tt>
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