Connecting flexible tap tails to isolation valve

[jrtrrror]

Hi all.
Just discovered the flexible tap tails are too short to reach the isolation valves by about 60mm. When I did the same type of job at my house, I learnt that using a tap tail connector is better than connecting directly to the iso valve, with its sharp edge. However, these are too short to make up the 60mm difference.
So, can a I use a radiator valve extension such as this
https://www.NoLinkingToThis/p/tesla...SJK6BM4mDFV1N6M8mxPfgIwoePj1Ul4RoCgnQQAvD_BwE

I tried looking for longer 500mm tap tails, but no one seems to sell them. Well, there are placed on eBay and Amazon, but I worry about quality.

Anyone got any ideas.
Many thanks
D

 

[Fos]

https://www.NoLinkingToThis/p/jg-sp...p-connector-hoses-15mm-x-x-300mm-2-pack/9938g

Then just use a bit of copper the required size out of the Iso ?

 

[Best]

Or just extend the pipe from your iso valves (using the iso valves nut and olive to connect) and then use a male straight fitting (1/2” x 15mm) if connecting to a tap flexi that has the nut and flat rubber washer end

 

[Mrb]

Hi all.
Just discovered the flexible tap tails are too short to reach the isolation valves by about 60mm. When I did the same type of job at my house, I learnt that using a tap tail connector is better than connecting directly to the iso valve, with its sharp edge. However, these are too short to make up the 60mm difference.
So, can a I use a radiator valve extension such as this
https://www.NoLinkingToThis/p/tesla...SJK6BM4mDFV1N6M8mxPfgIwoePj1Ul4RoCgnQQAvD_BwE

I tried looking for longer 500mm tap tails, but no one seems to sell them. Well, there are placed on eBay and Amazon, but I worry about quality.

Anyone got any ideas.
Many thanks
D

View attachment 35457

They will be fine.

 

[Ric2013]

Get WRAS approved flexible tap tails form BES. Quality should be good. And if your tap tails are speedshit, then speedshit onto chrome is a no no.

 

[jrtrrror]

Hi Cos. Did you mean replace the flexible Monobloc tap tails with your suggested speedfit Flexi tap connector. 15mm X ½"?
Forgive my ignorance, but I don't see how they would work. There appears to be no 10mm thread to connect to the tap and they are only 300mm long. The ones currently in use are 400mm long and around 60mm too short.

And to Best..
Was my suggestion doable? I've just noticed it reads 15mm x 15mm and not 15mm X ½". I'm confused by the measurements

 

[Ric2013]

15mm would refer to a compression or speedshit connexion. 1/2" would be a BSP threaded connexion as you would usually find on the isolators.

 

[jrtrrror]

Get WRAS approved flexible tap tails form BES. Quality should be good. And if your tap tails are speedshit, then speedshit onto chrome is a no no.

Hi. Thanks. Do BES do 500mm long ones? I remember seeing there site, but was unsure about the company.
Ta

 

[Best]

Hi Cos. Did you mean replace the flexible Monobloc tap tails with your suggested speedfit Flexi tap connector. 15mm X ½"?
Forgive my ignorance, but I don't see how they would work. There appears to be no 10mm thread to connect to the tap and they are only 300mm long. The ones currently in use are 400mm long and around 60mm too short.

And to Best..
Was my suggestion doable? I've just noticed it reads 15mm x 15mm and not 15mm X ½". I'm confused by the measurements

I meant use a 15mm x 1/2” male straight.
The threads are actually 1/2” both sides, but one end has a flat face which will suit flat washer end of flexi.
Other end is for 15mm copper

 

[jrtrrror]

15mm would refer to a compression or speedshit connexion. 1/2" would be a BSP threaded connexion as you would usually find on the isolators.

Thanks, again. Does that mean my suggested 15x15 radiator tail would not fit the compression iso valve?
Ta

 

[Best]

Thanks, again. Does that mean my suggested 15x15 radiator tail would not fit the compression iso valve?
Ta

It will fit it. A radiator rail is actually 15mm ‘pipe’ and with a 1/2” male thread end

 

[Ric2013]

900mm even. The BES website is pretty poor, so I phone in my orders these days and use the catalogue. If you get a WRAS one you shouldn't go far wrong.

 

[jrtrrror]

I meant use a 15mm x 1/2” male straight.
The threads are actually 1/2” both sides, but one end has a flat face which will suit flat washer end of flexi.
Other end is for 15mm copper

Haha. Blinking ek, I'm more confused now. Haha t
"The threads are actually ½" both sides...other end is for 15mm.
What is actually being measured at ½" if it's a 15mm pipe.
Sorry. I'm very curious and like to learn new stuff
D

 

[Mrb]

They will fit just fine.

 

[Ric2013]

It will fit it. A radiator rail is actually 15mm ‘pipe’ and with a 1/2” male thread end

But isn't designed for potable water, probably. And won't serve a purpose: if the point of using a rad tail valve is to avoid putting a 1/2" threaded flexi onto a thread that's really designed for a compression olive, then I can't see the advantage of screwing onto a thread that's really designed for putting into a radiator and thread sealing. It's possibly a taper fitting too.

 

[jrtrrror]

900mm even. The BES website is pretty poor, so I phone in my orders these days and use the catalogue. If you get a WRAS one you shouldn't go far wrong.

Thanks. I'll give them a buzz tomorrow. I'm wondering if longer monobloc tails would be easier or wiser. But then, I bet some rad tails would be cheaper.

 

[Ric2013]

1/2" is 1/2" BSP thread. So called because the nominal bore of steel pipe onto which such thread would be cut (still used in commercial heating applications) is 1/2". Welcome to plumbing

 

[Ric2013]

Right. So you have a monobloc tap with 10mm thread? Would have been useful to put that in your opening post. Anyway, it's late. I'm going back to my Charlotte Bronte novel and then bed.

 

[jrtrrror]

But isn't designed for potable water, probably. And won't serve a purpose: if the point of using a rad tail valve is to avoid putting a 1/2" threaded flexi onto a thread that's really designed for a compression olive, then I can't see the advantage of screwing onto a thread that's really designed for putting into a radiator and thread sealing. It's possibly a taper fitting too.

Welcome to plumbing you say...
I wish I'd never asked now. Haha.
You lost me with this post. I can only imagine it was for meant for those other contributors, who actually know something. Haha
Thanks again.

 

[jrtrrror]

Right. So you have a monobloc tap with 10mm thread? Would have been useful to put that in your opening post. Anyway, it's late. I'm going back to my Charlotte Bronte novel and then bed.

Oops. Yes, you're right. But hey, that would have been sensible and far too easy. Enjoy Charlotte Brontë. Are listening to Kate Bush whilst reading?

 

[Ric2013]

No. It was for you.

In simple terms, a rad valve tail might be made of materials not designed for use with drinking water and could potentially contaminate not only the water you drink, but that which your neighbours drink.

I was pointing out that using a rad valve tail to avoid screwing onto an isolator doesn't really achieve anything.

Plumbing is complicated. That's why it's a trade and why we spend ages learning it. Then some people complain we're expensive, and spend a day doing a job we could do in an hour because they lack the knowledge we try to have.

Nah. I can't read and listen to music that has words. Sometimes classical, but I often prefer silence.

 

[Mrb]

I don’t think I have ever seen a solid rad tail extension that’s not chrome plated brass.

 

[Harvest Fields]

Hi Cos. Did you mean replace the flexible Monobloc tap tails with your suggested speedfit Flexi tap connector. 15mm X ½"?
Forgive my ignorance, but I don't see how they would work. There appears to be no 10mm thread to connect to the tap and they are only 300mm long. The ones currently in use are 400mm long and around 60mm too short.

And to Best..
Was my suggestion doable? I've just noticed it reads 15mm x 15mm and not 15mm X ½". I'm confused by the measurements

Wouldn’t put 2 flexi’s together. Extend the copper onto the tap flexi

 

[jrtrrror]

No. It was for you.

In simple terms, a rad valve tail might be made of materials not designed for use with drinking water and could potentially contaminate not only the water you drink, but that which your neighbours drink.

I was pointing out that using a rad valve tail to avoid screwing onto an isolator doesn't really achieve anything.

Plumbing is complicated. That's why it's a trade and why we spend ages learning it. Then some people complain we're expensive, and spend a day doing a job we could do in an hour because they lack the knowledge we try to have.

Nah. I can't read and listen to music that has words. Sometimes classical, but I often prefer silence.

You won't be listening to wuthering heights then???

 

[Harvest Fields]

You won't be listening to wuthering heights then???

I hate that song with a passion. Winds me up just thinking about it.