A 25mm to 15mm adapter needed.

[richard7761]

Hi. I have a quality stop cock that I ought to use. I'm left it because the local council (the beggars) never completed what they started. Anyway, on the inlet side it takes a blue plastic pipe of 25mm dia. that has an olive on it. Tighten up the nut and you get a seal. On the outlet side the same arrangement, but it's for 15mm copper pipe.

Because my water supply pipe is 15mm copper I need some sort of adapter, so this 15mm pipe will fit onto the 25mm side of the stop cock. I was hoping I could buy a brass adapter, but I have not identified a product.

Can anyone please tell me what adapter you would use in the circumstances. Thanks. Rich.

 

[holty]

http://www.toolstation.com/shop/p39...006983&gclid=CjwKEAiAxsymBRCegqiLzI7Q1S8SJADO

 

[richard7761]

That link takes me to a poly stop cock. I've got one myself, but better. I'm looking for poly copper adapter of some type.

I think I need something like the link shows, but it would be reversed. The male part would be bigger than the female.

http://www.toolstation.com/shop/Plumbing/d20/Compression/sd2697/Poly+Copper+Adapter/p25845

 

[DaleRCL]

Just go and buy a 15mm stopcock. They're about a fiver

 

[richard7761]

Well, that's what I thought the message probably was. Because there isn't such a thing as a brass adapter or coupler from 25mm to 15mm, not even a straight coupler. It's not possible to connect a stop cock that accepts a 25mm MDPE pipe to a 15mm copper pipe, as I say, not even via a straight coupler.

 

[richard7761]

I think this is the product that would do it. But might cost more than a stop cock.

http://www.toolstation.com/shop/Plumbing/d20/MDPE/sd2729/JG+Speedfit+MDPE+PE+-+Copper+Coupler/p94382

 

[richard7761]

Just a thing about the stop cock that I have, it's got a drain off.

Maybe council thought it needed to fit that type. But, I don't think I have to. Can drain to sink about 2 foot above stop cock.

I might even have a K787DZR! Quite expensive if so.

 

[leakydave]

So why can't you fit a 25mm/15mm stopcock? It's the easiest way to join the two.

 

[richard7761]

I've found that if you happen to have to hand a stop cock with 25mm inlet and 15mm outlet, you cannot get an adapter that allows the stop cock to be connected to a 15mm water supply pipe. You have to buy a 15mm in, 15mm out stop cock.

Unless this works:

http://www.toolstation.com/shop/Plumbing/d20/MDPE/sd2729/JG+Speedfit+MDPE+PE+-+Copper+Coupler/p94382

But that costs more than a stop cock.

 

[jamie87]

Who's the manufacterer of the stoptap? Plasson do adapters for their poly stoptaps, but doubt they'd fit other manufacterers.

http://www.ebay.co.uk/itm/Plasson-MDPE-Copper-Pipe-Adaptor-25mm-x-15mm-7438016-/170492222915

 

[richard7761]

Stop cock I believe is using Kuterlite 700 fittings by Pegler. I just found a price list. Maybe something on there.

The nut for the 25mm side for the MDPE pipe says "KUTERLITE - 700 864 - 5 25 "

http://www.pegleryorkshire.co.uk/MEDIA/Downloads/CC_003/86146802_11_Kuterlite.pdf

 

[richard7761]

I think my best bet is to contact Pegler, and tell them what I'm trying to do.

 

[Elkato531]

Do I have this correct.

You have a 15mm incoming main and 15mm internal pipework but you are trying to use a 25mm to 15mm stopcock just because you have it lying around?

If that's the case, do what has already been suggested and use a 15mm stoptap. Its the correct part for the job and not expensive. What you are trying to do is pointless and a bodge.

 

[richard7761]

Yes, you have it right. I'll take the advice and get a stop cock for the job.

Put the stop cock I got on Ebay, might get something for it. It's got a drain off but don't think that means much. Rich