Sunvic 3 port 4 wire motorised valve.

[MrTed]

I am looking to replace the above but I am struggling to find a suitable 4 wire replacement.
I have seen a Drayton 27101SX 3 port motorised valve on the Screwfix site. In the description it states that it is a "4, 5 or 6-Wire Installation"
Can I use this as a replacement and if so, what happens to the two "extra" wires and would the wiring colours make sense?
I have fitted replacement valve previously in another house - but that was a like-for-like swap.
I would be grateful for any advice.

 

[CBW]

Danfoss Randall HS3 22mm Mid-Position Motorised Valve

www.heatingcontrolsonline.co.uk

https://www.myson.co.uk/static_files/my/media/downloads/MPE_322_Installation_sheet_Sept_2009.pdf

 

[MrTed]

Thanks Chris,
That looks a very good option, well priced and a good brand.

MrTed