Connecting flexible tap tails to isolation valve

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Connecting flexible tap tails to isolation valve

Discuss Connecting flexible tap tails to isolation valve in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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jrtrrror

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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

ae235.jpeg
 
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 ?
 
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
 
jrtrrror said:
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
Click to expand...

They will be fine.
 
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 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

 
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 said:
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
Click to expand...

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
 
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.
 
Best said:
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
Click to expand...
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
 
Best said:
It will fit it. A radiator rail is actually 15mm ‘pipe’ and with a 1/2” male thread end
Click to expand...
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.
 
Ric2013 said:
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.
Click to expand...
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.
 
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 :)
 
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.
 
Ric2013 said:
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.
Click to expand...
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.
 
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.
 
jrtrrror said:
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
Click to expand...
Wouldn’t put 2 flexi’s together. Extend the copper onto the tap flexi
 
Ric2013 said:
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.
Click to expand...
You won't be listening to wuthering heights then???
 
Ric2013 said:
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.
Click to expand...

Good points. The rad valve tails do match up well though.
I use male fittings, but have used rad tails somewhere.
 
Hi. Do these male couplers have a flat face to connect the end of the flexible Monobloc tap tail?
In the past I've noticed that some iso valves have a sharp face, so I've bought tap tail adapters when connecting flexi Monobloc tails.
 
jrtrrror said:
Hi. Do these male couplers have a flat face to connect the end of the flexible Monobloc tap tail?
In the past I've noticed that some iso valves have a sharp face, so I've bought tap tail adapters when connecting flexi Monobloc tails.
Click to expand...

If you have the nut with flat rubber washer on end of your tap flexies, then yes, the male fitting has the flat face and same threads
 
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