replacing a B&Q outside tap kit

[logger]

just after a bit of advice, got called around to a mates house to see why the outside tap isnt working, its had a B&Q special fitted. and the stop valve aint letting water past. as im on leave for two weeks she want's me to help fix it. she's a good friend and said i will do it if she gets the parts. my dilema is im looking at getting back into plumbing when i get out of the Army later this year and like to do things right. so, im not willing to fit another self cutting tap kit. so im going to fit iso valve, check valve new tap ect. couple of questions. the hose goes through a 16mm hole do i need to drill out the hole to run a sleeve and seal both ends can i fit a tap that has a built in check valve ? only asking the last question as she bought a new tap with one fitted. not sure where i stand on this in terms of water regs ? hope someone can help shed some light on this for me ?

 

[JCplumb]

Yes, drill the hole out to accomodate your sleeve, no don't use an integral check valve.
That's if you want to do it properly.

 

[logger]

Thanks for the reply, time to buy a huge arse drill bit

 

[kirkgas]

I use this type of thing to go through the wall, I have to admit I fit these and wrap the copper tail in tape rather than inside another pipe sleeve as I have a 20mm drill bit
Always fit a check valve inside the property not the ones inside the tap as they don't comply with water regs

 

[Killy Bing]

As per kirk but i sleave. Get a 25mm drill bit .
double check valve and isolater inside too.