Plumbers world thread

[Milzy]

Can you use these onto Plastic speed fit pipe?
I have this eBay tap with the hole centres out so I can’t get my two speed fit hoses in together but it will fit the supplied flexi hoses.

 

[Milkfloat]

Not directly no.

 

[Milzy]

Not directly no.

Well I’ve just found out a plumber has been doing it for years.

 

[bikingdad90]

The problem with using speed fit/flexi pipes and such isolators is that there is a little washer that gets crushed when you connect up to as it relies on compression to reduce the diameter at the fitting, it’s great for fit and forget but rubbish if your ever planning on removing again in the future as the washer is a one time use only and needs replacing when you do any work. You are better off using the proper speed fit isolators and or swapping to copper pipework.

 

[Milzy]

The problem with using speed fit/flexi pipes and such isolators is that there is a little washer that gets crushed when you connect up to as it relies on compression to reduce the diameter at the fitting, it’s great for fit and forget but rubbish if your ever planning on removing again in the future as the washer is a one time use only and needs replacing when you do any work. You are better off using the proper speed fit isolators and or swapping to copper pipework.

I can get thousands of those olives from work.
Have you a link to a proper speed fit isolator please Sir?

 

[neil_merseyside]

Yes with pipe inserts to support the barrier pipe. BUT those taps are cheap and nasty, and Flexi pipes on mains pressure is a no from me!

 

[bikingdad90]

https://www.screwfix.com/p/jg-speed...V4ejtCh3RJwGZEAQYASABEgKcHPD_BwE&gclsrc=aw.ds

15mm diameter but you can also get 12 and 10mm. They are pricey but much higher quality and the valve is unlikely to stick.

If you prefer plastic then these are the suitable ones https://www.screwfix.com/p/jg-speedfit-15svp-isolating-valve-15mm/12372

 

[Supersuperleeds]

@bikingdad90 that link still has a post code in it for store location, you may or may not want to get rid of it

 

[slowmotion]

Speedfit used to supply rigid plastic internal sleeves to reinforce the plastic pipe against crushing when it transitioned to brass compression fittings. I have no idea if they still do. I'm not a big fan of plastic plumbing. It can get you out of a tight corner but it looks sloppy. It probably fits in well with the rest of the workmanship on a modern domestic building site.

Edit: I was referring to semi-rigid plastic Speedfit pipe, not flexible hose.

 

[Milzy]

https://www.screwfix.com/p/jg-speed...V4ejtCh3RJwGZEAQYASABEgKcHPD_BwE&gclsrc=aw.ds

15mm diameter but you can also get 12 and 10mm. They are pricey but much higher quality and the valve is unlikely to stick.

If you prefer plastic then these are the suitable ones https://www.screwfix.com/p/jg-speedfit-15svp-isolating-valve-15mm/12372

I’m aware of these but you’re missing the point. I can’t have them because my flexi’s are nut fitting because the China tap doesn’t have room to accommodate my posh expensive speed fit flexis.

 

[Milzy]

Yes with pipe inserts to support the barrier pipe. BUT those taps are cheap and nasty, and Flexi pipes on mains pressure is a no from me!

Yes I have pipe inserts.

 

[newts]

You can't attach the 1/2" nut on the flexi pipe direct to the end on the isolator (it's 1/2" but the end is tapered for an olive).
You'll need 1/2" male thread on the end on an isolation valve like this;-
https://www.bes.co.uk/flat-faced-st...7J1b72OaTOP-JBa7bnn_bIBYdgAnmc5BoCwX4QAvD_BwE

or a 15mm x 1/2" MI like this after the compression isolators with a short bit of pipe in between.
https://www.toolstation.com/made4tr...g8Yfiu4Hw4k5ji1zYnRoCgkIQAvD_BwE&gclsrc=aw.ds

Due to the limited space an isolation valve with 1/2" Male end is preferable.

 

[newts]

These would be ideal (didn't know these were available).
https://www.toolstation.com/tap-tail-adaptors/p14081?searchstr=Tap Tail Adaptors

 

[Milzy]

Speedfit used to supply rigid plastic internal sleeves to reinforce the plastic pipe against crushing when it transitioned to brass compression fittings. I have no idea if they still do. I'm not a big fan of plastic plumbing. It can get you out of a tight corner but it looks sloppy. It probably fits in well with the rest of the workmanship on a modern domestic building site.

Edit: I was referring to semi-rigid plastic Speedfit pipe, not flexible hose.

There are inserts in the speed fit part. As far as I can tell the CP 15 I posted above will lose one end & fit the flexi pictured & the the other end will compress the olive onto the plastic with no dramas. And only 95 pence or grab two from work.

 

[bikingdad90]

My apologies @Milzy hadn’t appreciated the nutted end on the flexi’s. This would work I think? It’s a male screw onto a speed fit on the other end?
https://www.screwfix.com/p/jg-speedfit-straight-service-valve-x/10330