pinholes in hep2o plastic pipe

lor · 29 Dec 2007

we have a site approx 5 years old and have had 8 leaks on the hep20 plastic pipes,on the pipe not the joints.
The leaks spring from pin holes.no-one can explain why this is happening ,any ideas as im bored of pulling down ceilings.
ps ;the leak pipe is not rubbing against anything where it leaks

Kes · 29 Dec 2007

Is the pipework C/heating or other services? Have you asked Hepworths what they think of it? Hep2O does after all have a fifty year guarantee.

Rgds.

ChrisR · 29 Dec 2007

Gosh! I suppose they're allowed a faulty batch once in a blue moon but it's worth pursuing them for consequential losses, surely?
Was it barrier pipe - not that that should make a difference imho?
A nice close-up pic would be lovely!

JohnD · 29 Dec 2007

What sort of rodents or other houshold pests do you have in Northern Mariana Islands?

Are there many nail-points through the timbers?

lor · 29 Dec 2007

hi,
the pipes are carrying dhw on a secondary return. No water softner,hard water. It is not barrier pipe I believe.
Dont think it is a manufacturing fault because most of the burst have occured in one area of a vast nursing home .also the central heating pipes to the rads are in the same plastic and have been ok so far.
thanks for your replies

corgiman · 30 Dec 2007

Is the water getting really hot?,

Blimey this is worrying lor

robhall · 3 Jun 2009

As this is a nursing home, I take it that the pipe-work would be regularly chlorinated to prevent legionella etc, as is the case in the hospitals I work in. If so, plastic pipe is suscepitble to high doses of chlorine, maybe that is the problem.

dextrous · 3 Jun 2009

Stingray13 · 3 Jun 2009

robhall said:
As this is a nursing home, I take it that the pipe-work would be regularly chlorinated to prevent legionella etc, as is the case in the hospitals I work in. If so, plastic pipe is suscepitble to high doses of chlorine, maybe that is the problem.

Intresteding i choose not to use clorine but to use hydrogen peroxide. Makes it so much easier not having to flush it all out

gas4you · 3 Jun 2009

Stingray13 said:
Intresteding i choose not to use clorine but to use hydrogen peroxide. Makes it so much easier not having to flush it all out

Good for the old dears hair do's as well

OP, any chance that flux has contaminated the Hep, or is it an all Hep installation?

kirkgas · 3 Jun 2009

could it be mice, had one in a loft once with a hole in it, changed it and got called back a couple of days later witha hole in the new pipe in exactly the same place, turns out there was a squirrel in the loft and it was biting the pipe where it passed the tank stool

mogget · 3 Jun 2009

gas4you said:
OP, any chance that flux has contaminated the Hep, or is it an all Hep installation?

I think the OP may have gone by now, interesting thread though.

I wonder if we should have a sticky topic for plastic pipe problems and solutions?

dextrous · 3 Jun 2009

mogget said:
gas4you said:

OP, any chance that flux has contaminated the Hep, or is it an all Hep installation?

Click to expand...

I think the OP may have gone by now, interesting thread though.

I wonder if we should have a sticky topic for plastic pipe problems and solutions?

Nah

doitall · 3 Jun 2009

Plastic Pipe

Not fit for purpose comes to mind, sorry only option is to rip it out and do the job properly, in copper.

avidfan · 3 Jun 2009

Remember reading in some Hep literature along time ago that pipe was not suitable for secondary return applications. Something to do with not being able to withstand very high temperatures for very long periods of time, 24 hours a day in this case. Maybe wrong, worth checking though. On a different note, a friend of mine had a couple of Polytpipe fittings blow off. Polyplumb technical told him that their systems should be tested to EIGHTEEN bar. How many of us do that? Seems that the guarentee is totally worthless if that is the case.

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pinholes in hep2o plastic pipe

dextrous

dextrous

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