pushfit piping

[rvgledhill]

I have bought a thermostaic mixer shower. The inlet connectors are 15mm with screw & compresion ring.
The bathroom is plumbed with plastic pushfit piping.
Can I go straight into the shower with plastic pushfit piping or do I need a bit of copper then couple this up to the plastic ?

Any advice would be welcome.

Thanks in advance,
Rob

 

[EliteHeat]

Plastic is OK but make sure that you use the correct sleeve.

 

[Agile]

The "sleeve" is more correctly called an "insert" and stops the plastic squashing when the compression nut is tightened onto the olive.

Tony

 

[rvgledhill]

Many thanks for your help.
Rob.

 

[Softus]

The "sleeve" is more correctly called an "insert"

It's only pompous fools who believe that there's only one 'correct' term for a part made differently by different manufacturers.

For example, in their price list, Hepworth call the HX60/15 a "support sleeve".

A proper and professional plumber would have known that.

 

[bathjobby]

Also bear in mind that these sleeves also reduce the bore of the pipe. Not sure what type of system you have (gravity, combi, etc), but if flow rate is a concern, these will hinder it....

 

[grrinc]

^^^^ 'tis true. The Hep sleeves are a thin metal type that are less restrictive than some of the bulkier plastic ones.

 

[Softus]

Also bear in mind that these sleeves also reduce the bore of the pipe. Not sure what type of system you have (gravity, combi, etc), but if flow rate is a concern, these will hinder it....

So what? There isn't any practical alternative to using the manufacturer's sleeves/inserts when using plastic pipe.

When copper tube is used there are more joints and the internal walls are less slippery - have you calculated the flow rate for plastic and for copper to see which comes out more?

 

[bathjobby]

So what?

have you calculated the flow rate for plastic and for copper to see which comes out more?

Yes, I multiplied the angle of the dangle by the lob of the knob and got the result that I was just offering an apparent novice with something to consider before he came back with; thanks, but my shower is only dribbling now.

 

[Softus]

...but my shower is only dribbling now.

Then perhaps your shower installer took advice of the same quality that you offered rvgledhill.

 

[denso13]

Good point bathjobby, something to consider depending on existing system. Some inserts restrict more than others.

When copper tube is used there are more joints

Not necessarily.

 

[Softus]

When copper tube is used there are more joints

Not necessarily.

Here - catch (Softus tosses denso13 his UK Mr. Pedant award).

 

[denso13]

When copper tube is used there are more joints

Not necessarily.

Here - catch (Softus tosses denso13 his UK Mr. Pedant award).

I was only pointing out it is the overall design of the new work, taking in to account the existing which may, or may not, be important.

You critisised a previous post which is up to you, but when I correct something i'm being pedantic. Don't think so.

 

[Softus]

On aggregate, it's not possible to run copper tube the same distance as plastic pipe with as few connections. In the big picture your correction was therefore not a correction.

 

[bathjobby]

Previous credibility gone Softus. Case closed.......