Cap internal blow off (prv) and fit on pipe work instead?

[tolly]

You sure? Was at a 40cdi conventional last week.

 

[ShaunCorbs]

You sure? Was at a 40cdi conventional last week.

TBH not 100% sure as I installed it 2 years ago

 

[Jones82]

Your right my mistake, modern heat only's I've fitted don't have iso's and now I know why!

 

[Ric2013]

I've worked on a heat-only installation that had restrictive quarter turn isolators on a heat-only boiler. I removed the isolators for obvious reasons.

 

[richard978]

Hi

I'm Gsr by the way and should get around to sending in my card details.

I'm working on a system boiler and central heating system and the prv/vessel has recently failed, I'm finding it difficult to source the prv short notice, I'm thinking of capping the Prv inside the boiler or the existing discharge pipe work then fitting a new one on the return pipe work close to the boiler, I'm already fitting a replacement external expansion vessel and filling loop so perfect time to do it.

The existing internal vessel has split and is undersized.

Thanks

Don't be silly, if you have your CCN1 and CENWAT then you should know why.

The Avanta is actually made by BAXI and the parts are easy to come by. The issue is replacing them as with most expansion vessels changing them is labour intensive and rear flues often obstruct the vessel.

I can tell you the HYDRO blocks on those are evil to change, I did one last year and it had me sweating.

Maybe its time for a new boiler, its probably 10 years old/

 

[dan_the_plumber]

I would say speak to manafacturer. See if they do a specific ‘remote PRV set’. If not then don’t do it 🙂)