Leaking Cwcv Valve.

[Bramleyboy]

Last year I noticed water running through a tundish in our airing cupboard. I thought it was normal until the engineer servicing our boiler said it was faulty. I had it replaced on 22/05/2019 at a cost of £303.42. This morning I looked in the airing cupboard and the same thing was happening. I assume I will need a new Cold Water Combination Valve! Please can a plumber advise me as to what I should expect to pay for and approximately how much. Access is very easy and it was replaced last very quickly. Heeeelp please? Bramley
,

[The Builder]

Is this on the cold water main inlet (reduces mains pressure to 3 bar)?

Or one on the side of the cylinder.

I'm assuming it's an unvented hot water system?
If so, what's the make of the system?

[ladybirder]

No 12 months Warranty then Bramley?

[Bramleyboy]

Sorry Builder I’m not technical but there is a tap just before the valve and because of the running cold water the pipe is covered in condensed water. I have turned off the tap and now the hot water to other taps just trickles through. It is an unvented system, there is no cold water tsnk anywhere. I don’t know what the make of the system is- where would I find that? The boiler is a Grant. Sorry to be obtuse. As to Ladybirder, that is my question! Is there a warranty on parts and/or labour. Bramley

[ladybirder]

You have to ask the plumber who did the work Bramley and/or check any paperwork you were given at the time.

[The Builder]

Ok BB. Not enough information for me to be much use I'm afraid. I'd really need to actually look at it.

However, these valves can be as little as 40-50 pounds, or, for some reason, "Megaflow" and other makes charge over 200 for a valve.

Changing them is really only a matter of 10 or 20 minutes work.
300 pounds does seem a lot. I agree with LB, the manufacturers should replace it. The plumber should know that, in law, he is responsible since he supplied it, regardless of where he got it.

Ideally, the plumber should get a replacement and replace the valve. A decent chap would not charge for the labour either.
Sadly, you're in his hands.

[Atheist]

Builder, a tundish is a funnel, and would usually be found on a safety valve discharge pipe. Just thought I would mention that in case it colours your advice.

[Atheist]

Builder; or on a condensate pipe.

[The Builder]

I'm grateful to my learned friend, The Atheist, ;o)

It's Ok. I know the "original post" is a bit misleading. It sounds as though the tundish is the leaking valve.
As you know, there's nothing in them to go wrong. It's just an "open" indicator which gives sight of water flowing from any faulty valves further upstream.

I'm pretty sure the tundish isn't the problem here.

[Bramleyboy]

My follow up to this question. The valve was replaced by the same plumbing firm and now appears to be working. However, this morning I received a bill for ‘callout and report. £98.40’
Should I pay this or refuse? Bramley.

[Theland]

I would pay to avoid stress and hassle.
Then forget about it :-)

[The Builder]

I'm assuming this is a replacement for the previous "replacement"?

Legally, Bramley, they are obliged to replace faulty goods at no cost to you.
That's the theory, anyway. I would speak to the owner of the firm and explain. Whenever something like this has happened to me, I've simply replaced the item without charging a thing.
But then, I'm a simple soul with no appetite for conflict, especially when it's not the customer's "fault".

Maybe negotiate. Pay for the labour but not the valve.
You shouldn't have to go through all this.

[The Builder]

On re-reading your post, does "callout & report" imply they have replaced the valve without charge, but are billing you for the time?

[Bramleyboy]

Yes I will pay and forget. Incidentally, the leak must have been there for some months as my water bill is now £1779 and it’s usually about £400! I didn’t realise there was anything wrong! You live and learn. Bramley.