"Kevin" wrote in message
...
Mary Fisher wrote:
"Doctor Drivel" wrote in message
...

... plastic pipes are solar installations are not a good thing as they
weaken dramatically when over 100C.

It's not true of all plastic piping and water isn't going to get to over
100C by any system.

unless its pressurised, at 10 PSI water boils at 115C at 40psi its 141C
not sure you could run a solar system in the UK at these temperature or
pressures though

Separate temperature and boiling point.