How do i connect mixer shower inlets to Hep20 plastic pipework?

[crobar]

Hello,

I am fitting a new shower, this is a mixer shower run off a combi boiler and cold mains. The rest of the pipework (at least anywhere near the shower) is plastic Hep20 (fitted by myself). My problem is I don't know what kind of connection I need to attach the shower inlet to the plastic pipework. I've attached a pic of the shower below, and a close up showing the size of the inlet, which is a femalt threaded connection.

So what size and type of fitting should I connect to these to eventually join to my plastic pipework?

EDIT:
oh, and I have two Hep2O 1/2 inch BSP to 15mm push fit pipe connectors as I thought these might be the right things to use. If so, do I need to wrap in PTFE bfore screwing on, and how tight should I make them?

 

[AGAS]

i wouldn't personally install shower on plastic behind wall in partition especially when covering in tiles . just imaging getting leak on valve and getting access to it.

 

[crobar]

i wouldn't personally install shower on plastic behind wall in partition especially when covering in tiles . just imaging getting leak on valve and getting access to it.

It'll be accessible from the side by removing the back of some shelves, but what would be the actual problem with plastic, is it the connection? I've never had any problem with Hep20 plastic fittings leaking, way more problems with copper compression fittings. If the connection, I can have a little copper between the shower and Hep20, but would still like to know the correct fittings for this.

 

[leakydave]

You will need ½" to 15mm male irons

 

[crobar]

You will need ½" to 15mm male irons

Thanks, and would hep20 1/2 inch to 15mm push fit do the same job, or does it have to be these then copper pipe then Hep20 push fit?

Do I need any PTFE or anything like this?