Plastic pipe central heating system

[Kwisatz78]

Hi all

I am thinking about using Hep2o for a bit of DIY improvement for a new central heating system. However I want to know about what fittings can be used, can you use speedfit stuff for bends etc?

Thanks

 

[Charnwood]

Why think about Hep2o pipe and Speedfit fittings? Stick with a single brand, or use compression fittings on PEX/PB pipe.

 

[bathjobby]

Standard 'speedfit' are rated for domestic water temprature and not central heating. Why not use Hep2o fittings !

 

[Charnwood]

Almost all Speedfit fittings are suitable for use on central heating.

 

[Kwisatz78]

Ok cool, I was just having a bit of trouble finding any for example at Wickes. I have not been able to find any isolation valves at all, may have to go to copper and put an isolation valve on that instead.

 

[Charnwood]

You can, as I said before, use compression fittings on PEX/PB pipe. Likewise for isos, use compression.

 

[Kwisatz78]

ok thanks HEP2o is a type of PEB\PX pipe which I hadn't understood so what you are saying is I can use any standard metal compression fitting such as http://www.screwfix.com/p/conex-compression-reducing-tee-22-x-15-x-15mm/45594

 

[Charnwood]

Yes, but you still need inserts.
Speedfit's metal isos/service valves are suitable for central heating.

PEX; cross linked polyethylene
PB; polybutylene

 

[Kwisatz78]

ok great thanks