pressure relief valve

Peter

Hmm, wonder if you can strip it and reassemble and still expect it to work (i.e. whether the pressure at which it trips is inherent in the design, or if it's dictated by how tightly some part or other is torqued upon assembly)

I suspect there's still a particle of something or other stuck in there, but disassembly might be the only way to get at it.

Alternately, the valve's probably a standard thread - if it'll come off, it's probably possible to source a 6 bar valve with the right fitting from *somewhere* even if it's not identical to the current leaking one.

Maybe something like:

Dunno. This side of the Pond they're all pretty standard and you can get the valves from any DIY store that does plumbing supplies (ditto with elements, drain valves etc.) - but I don't remember seeing such things in UK stores (not that I ever had cause to look that hard, though).

cheers

Jules

In message , Peter Andrews writes

Yes. That's the job!

I'm now curious to know what search terms you used?

regards

Possibly. Unfortunately, if I wreck it attempting a repair, my tenant will be without a supply for hand washing.

Yes. Peter has given me a source so the plan is to wait for the replacement to arrive before attempting anything.

These heaters seem to originate from Italy although Santon et al have their own versions but fitted with different over pressure arrangements.

regards

Agree. This side of the pond (i.e. eastern Canada) a typical pressure relief valve costs around $25 Can or less. That's around 12 to 15 quid! (New). Last time we bought one was because the PR valve on our replacement 120 litre dual electric element hot water tank (About 150 quid, two years ago, but now closer to 180 quid) was side mounted; so a valve with a deeper thread was required. All bought from a building supplies store, of which there are several of the leading Canadian chains in this city of around 200,000. Apart from that we'd still be using a 40+ year old second hand PR we picked up in a junk store/flea market back then; for 'pennies' IIRC. One inch pipe thread I think?

You'll find the same, only cheaper, at

I should have added that, in my experience with combi boilers, once they have been leaking the seats get irrevocably damaged and it's quick, cheap, and easy to replace them.

BES part numbers are

Between £5 and £6 plus vat

"6 bar relief valve" copied from your posting!

Peter

You said 6 bar!

AJH

In message , Peter Andrews writes

Hmm...

I tried *pressure relief valve* and then filtered for 6 bar.

Then various flavours of the above.

Under counter heater manufacturers were found but seemed unprepared to offer spares of this type.

Anyway problem potentially solved, subject to original plumbers comment that *they always leak in high water pressure areas*.

Thanks to all who helped.

regards

er.. yes?

regards

Sorry I misread it, I see it is adjustable up to 10 bar. We're not allowed to use adjustable ones so ours are factory set and have a lead seal, they cost considerably more too.

The only one that failed would not re seat itself no matter how I played with it once it started leaking.

AJH

These are also fixed. No lead seal though.

Yes. Amazing how water can cut a slot in a brass seating in a few months of dripping.

regards