Replacing Kitchen Tap - what is the minimum insertion depth for push fittings?

[ScottishRabbit17]

Evening all,

Basically my question is how deep must a 15mm copper pipe be inserted into a push fitting for it to function properly without leaking? I Bought this Tap Tail Adapters from Toolstation this morning and I am wondering if they are deep enough. I tried to install a new mixer tap this morning but I had a leak so I am wondering if I didn't push it in far enough or if they just aren't deep enough. I reinstalled my old tap (needed water) and I am wondering if I should try again tomorrow...

I'd appreciate any advice on this. I'm hoping I just made a mistake earlier and I don't have to go out and buy something else... Please see attached images below. Note I have already installed the adapters onto the flexible connectors.

For context my current set up :

a mono block mixer with two straight 15mm pipes going into 2 push fittings.​

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Desired set up:

new mono block mixer with two flexible connectors going into existing push fittings. (using the tap tail adapters I bought from toolstation)​

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Link to tap tail connectors from Toolstation - Link

 

[Ben-gee]

No, they won’t go in deep enough to get past the oring - so they will leak.
You could try unscrewing the old copper tails and reusing them, as long as they have the correct size threads. If so, use the orings from the flexis to replace those at the top of the copper tails.

 

[Deleted member 120897]

I suppose it would depend on the depth of your push fit fitting. Those tap tails are more suited to an isolation valve.

 

[ShaunCorbs]

Can’t use them on push fit as there smooth brass they would pop out

 

[ScottishRabbit17]

No, they won’t go in deep enough to get past the oring - so they will leak.
You could try unscrewing the old copper tails and reusing them, as long as they have the correct size threads. If so, use the orings from the flexis to replace those at the top of the copper tails.

Might try this idea tomorrow but need a back up plan as well. Do not want to fail again.

 

[steadyon]

Forget the tap tail adaptors in this case. Use a 15 mm compression x 1/2" BSP male iron (e.g. Screwfix 69358) for each tap together with a short length of 15 mm copper pipe to connect into the push fit.