Correct adaptor for his valve for HC80 ?

Hi there,

I've tried the Danfoss RA adaptor for this valve and the HC80's don't seem to full close on it. any ideas how to fit onto these ? Also, the plastic adaptor sits slightly proud of the bottom bit of brass on the valve, is this right, or should I try to force it all the way to the bottom ?

Thanks,
Roy.

2014-02-27 08.20.03.jpg

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