Tap flexible hose wrong size connector

[antonh]

Hello,

I have very little knowledge of plumbing and I stupidly bought a Grohe mixer tap from Amazon to replace an existing bathroom tap, link is here: https://www.amazon.co.uk/gp/product/B00WBIH962/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1

The flexi hoses it comes with are of a size that seems to be 3/8" (female fitting with a washer/o-ring), whereas the existing isolation valve is a larger size, I believe 15mm (male), so the flexi hose won't fit.

I've been trying to find some type of converter/adapter but the only things I can find are compression fittings, and there isn't a copper pipe for me to attach to, just the male screw fitting on the isolation valve. I really don't want to have to remove the valve, nor do I really want to insert a new piece of copper pipe with a series of fittings just so I can convert between two sizes .

Does anyone know of such a thing exists?

If not please can anyone recommend a different tap of similar quality that has a normal size flex adapter?

Thanks,
Anton

 

[tamz]

Unscrew the flexible tails from the tap and see what size thread it is. It will either be M10 or M12.
But a set of these whichever suits.
http://www.NoLinkingToThis/search?search=flexible+tails

 

[antonh]

Thanks Tamz, good suggestion. I tried unscrewing the tails but they just seem to rotate around in the tap without unscrewing, I don't think they are removable.

 

[tamz]

You need to get hold if the bit with the spanner flats to undo them. They are not hard to move. The flexi hose itself will just spin at the connection.

If you go into a plumbers merchant you will get the proper m10 or 12 tails to fit straight onto a 1/2" male thread

 

[antonh]

Unfortunately the nut is buried inside the tap body, according to the instructions it looks like the only way to unscrew them is to take the entire tap to pieces from the top down.

Last time I buy anything from Grohe.

 

[ShaunCorbs]

Thanks Tamz, good suggestion. I tried unscrewing the tails but they just seem to rotate around in the tap without unscrewing, I don't think they are removable.

other end as tamz says might be tight but should come out and just replace them

(grip the flex as close to the top as you can and undo should come out/ start turning)

 

[kozak1968]

You may find that Grohe tap tails are factory fitted. I think Toolstation do a 3/8" x 15mm adaptor part number 63663 will do the trick. This will let you connect a 15mm ballofix valve to it.

 

[antonh]

I've spent about 30 mins trying to unscrew the things and they are definitely not coming out. If you see the attached image there is no visible flat to grip onto, the cylindrical part is the end of the hose and that just spins round.



I've had a look at the toolstation part, it might do the trick, but does that mean I need to use it with a compression nut & olive to fix it to the existing 15mm valve?

 

[antonh]

OK I've just found this: Awa - 2 Adapters - Male 3/8" Female 1/2" - Chromed Brass - Connect european taps flexible hoses to 1/2" pipes

I'm going to give that a go, and if it doesn't work I'll head over to Toolstation. Thanks for your help all.

 

[thereisawizza]

Those parts will do the trick

 

[snoopy8888]

or this

http://www.toolstation.com/shop/Plumbing/d20/Flexible+Connectors/sd2807/Tap+Tail+Adaptors/p63663

 

[antonh]

The ones I ordered from Amazon worked perfectly. They just screwed straight onto the male connector on the existing ball valve, no compression fittings required.