20mm MDPE Irrigation Pipe (Hozelock)

[[TR]SweetSpotOz]

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[darren73]

Use a 20mm x 1/2 female iron fitting most outside taps are 1/2 thread or use a backplate elbow.

 

[Nightglow]

Wallplate Elbow.

http://www.screwfix.com/p/mdpe-plastic-wall-plate-elbow-20mm-x/62324

Outside tap

http://www.screwfix.com/p/15mm-x-outside-tap-with-check-valve/37241

or

http://www.screwfix.com/p/pegler-hu-bib-tap-with-check-valve/11558