Convert these plastic pipes to copper

[Jupiter01]

Can you please advise on how I can cut these pipes fairly low to the ground and convert to copper pipe please.

can I use the existing couplers for instance?

Thanks in advance

 

[muggles]

Those couplers look pretty ropey, I'd buy new ones rather than risking reusing them

 

[Jupiter01]

Which system couplers do I need and will they accept copper pipe upstream?

 

[Madrab]

Pretty similar to the old JG pushfit, would also recommend they're replaced. Any of the new type push fit fittings will accept copper.

 

[Jupiter01]

Can I use hep20 couplers on this?

 

[Madrab]

If it's copper throughout then no bother. If you're connecting to the plastic that's currently there then ideally you want to identify the make and then use their fittings/inserts.

 

[Jupiter01]

So JG couplers and inserts in that case?

 

[Madrab]

If it's speedfit pipe then yep.

 

[Jupiter01]

The speedfit fittings did the job

 

[stem]

Assuming that the isolator in your photo below is supplying a tap above, isn't the 'direction of flow arrow' pointing in the wrong direction?...

 

[Madrab]

good spot

 

[Jupiter01]

I noticed that direction issue but intrigued as to how this was working. Should this have allowed water to pass through?

My new valves are definitely the correct way up.

 

[Madrab]

Yes, it just flow isn't as smooth, the valve has entry and exit sides so it flows properly through the narrowed bore, a full bore is unidirectional as it has a straight through bore when fully open.

 

[Gasguru]

If you have a look at the construction of the valve you will find that installing with the flow opposite to the arrow risks blowing out the inner parts when isolated.