Radiator Valve question

[gordon40uk]

Hi, can a uni-directional valve be put on both sides of a radiator, same one as my link, thank you
https://www.screwfix.com/p/white-angled-manual-radiator-valve-10mm-x-1-2-/51257

 

[denso13]

Yes, no problem.

 

[oldbuffer]

1. I'm sure Denso is right, because I doubt that valve is unidirectional. If it were, it implies that flow can only go one way, which would mean that it could be on the flow, or on the return, but not on both.
2. Wouldn't be the first time products are mis-labelled / provided with incorrect information.