Plenty of car radiator parts are fabricated from plastic, which handles
water at a running temp of around 100 deg C, and with presumably
a margin of safety on top. So it seems that plastic is a suitable material for
hot water - even our kettle is plastic.
I think its more a case that the tooling for large plastic structures is
and not viable when cheaper materials / tooling is available.
The expectancy of most car parts is less than a plumbing or heating system.
If a car has done 15 years it is deemed to have done very good service.
Many of the components during those 15 years would have been replaced. No
one expects a top radiator hose to last 15 years.
I think it a case of, that the current plastic offerings are not suitable
for storing large volumes of hot water that may overboil here and there. I'm
sure they can come close, but it will be expensive to do so. Look at the
cost of plastic v copper pipe.
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The top radiator hose is not likely to be plastic. I would be very surprised
to see the plastic endcap of a radiator fail in 15 years. The core fairly
likely but then that is made from a much inferior material (hint: not
Eh? Isn't that the arguement? Its not that it can't be done just that
there is little economic point in it. Plastic pipes/pushfits have a lot
of advantages despite the extra cost. Its harder to see how to justify
the expense for a hot water tank IMHO.
Is there any advantage to clipping it along the length when, say, it's
running in an underfloor void?
Is there any disadvantages to letting it just lie on the ground?
(Apart from mechanical wear from movement)
Simon Avery, Dartmoor, UK
uk.d-i-y FAQ: http://www.diyfaq.org.uk /
I don't see any great advantages or disadvantages either way really.
Most of mine is fixed because it would have either got in the way for
future access, or just because I could and it makes for a neat job.
But have areas where the pipe was just pushed in one end and then out
the other, and just left to it's own devices.
My 1st floor runs are just laid flat on boards, technically I don't see
any reason why it can't just be left lying on the ground, assuming you
mean under the floor boards so chances of mechanical damage aren't a
problem, mind you plastic pipe is a lot less susceptible to damage than
copper and of course it won't corrode or develop pin holes, sound like a
good solution all round.
On Wed, 3 Dec 2003 12:07:51 +0000, David @chaplehouse.demon.co.uk
Oh I know that, what I was trying to say was I didn't try the hair
dryer trick because I didn't think it was worth it - the pipe's
designed to carry up to 92 degrees C, so an ickle hairdryer wouldn't
make a blip on allowing flexibility.
If our local shed stocks it I'll give it a go. I always seem to need
it when normal merchants are closed :) Pity really, since the local
merchant is 5 minute's drive away!
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