Polish Hep2o?

[Softus]

Just removed some plastic pipe from a heating system, bearing the following markings:

KIWA PB 70°C / 1MPa POLSKA INSTAL AT 90-01-0477

There's no EVOH barrier, and it has the colour and insertion depth markings of Hep2o pipe, but doesn't say "Hepworth" on it.

Has anyone come across this product before?

 

[Steady]

I have half a roll of this left- got it from BES. I ordered Hep20 standard pipe-this is what I got-it was packaged as Hep20 so had no reason to think it was anything else.
Though I did wonder about the Polish ,same as you did.

 

[John506]

I think it's foreign, there are KIWA products on www.hepworth.hu so they could own it

 

[Softus]

Yes it was dumb of me not to Google the KIWA string on its own, but doing so now reveals that it appears to be a certifying body (rather than a pipe manufacturer).

So, one could that guess "KIWA PB 70°C / 1MPa" means that some formal testing of some polybutylene pipe has certified the upper operational limits of temperature and pressure.

This, at least, might indicate that it's not some cheap knock-off, but might also indicate that it's entirely unsuitable for a heating circuit that could contain water at 75-80°C, notwithstanding the fact that it has no EVOH barrier.

I'm still curious about the apparent Polish reference....