PVC to Metal Connector - Central Heating

[mattlethargic]

Hi,

I'm putting C/H into my house and need to run a section, approx 3m, in PVC. This is not what I would have wanted to do. The previous owners tiled over the floor so cannot lay copper in from the top and the joists run the wrong way so do from underneath. So unless anyone has any better ideas I'm going to have to go with a plastic section.

My real question is can you get metal connections for plastic pipe? I'm joining to copper btw. I'm scared that pushfit will pop off and have heard stories of o-rings going.

I don't really want this to turn into a debate of pvc's pros and cons as I've read lots already, I just want to do the best job I can in the situation I'm in.

Thanks in advance

 

[Nige F]

use JG speedfit pipe with their special insert for use in compression fittings and er, compression fittings

 

[Agile]

In an ideal world you would not use compression or pushfit connections under floors.

In practice I might suggest pushfit for your application but they do have to be made properly and DIYers often dont have the knowledge.

Tony

 

[mattlethargic]

use JG speedfit pipe with their special insert for use in compression fittings and er, compression fittings

Like the normal everyday compression fittings?

In an ideal world you would not use compression or pushfit connections under floors.

In practice I might suggest pushfit for your application but they do have to be made properly and DIYers often dont have the knowledge.

Lol, ideal worlds don't exists!! (I wouldn't be where I am now if they did!!)
Why would you suggest pushfit and what do you mean made properly? Do you mean the connection has to be made properly, if so how is that done? I've used pvc for the hot and cold and had no problems connection things up properly. (I've not flooded my house yet!)

 

[Agile]

The leaks dont start immediately and can wait a year to twop or more!

Cut square with a cutter

Not scratched at the fitting

Fitted with an insert

Pushed fully in

Pulled back sharply to check and bite

Used with the fitting as they come and not reassembled wrongly



Probably a few more mistakes as well!

 

[Nige F]

use JG speedfit pipe with their special insert for use in compression fittings and er, compression fittings

Like the normal everyday compression fittings?

t!)

Indeed

 

[Tsplumbing]

If you do opt for push fit then when you connect on to the plastic pipe you can see if the fitting and pipe are correctly engaged. There is indication markers on the plastic pipe and if you cut the pipe exactly on the line then the next indication line will be flush with the end of the fitting. Dont forget to twist the fitting when finished if using John Guest to lock it.