diverter valve question

[nickdesign]

Hi Guys,

could anyone tell me why this diverter valve wouldn't work with a pressure of less than 2 bar?

http://www.boundarybathrooms.co.uk/WebShop.aspx?ProductDetail=44537

I need a simple minimalist concealed 3 way diverter to direct water flow after leaving a pumped shower unit I have purchased.

 

[seco services]

probably due to its small bore inside etc.

this one works down to 0.2 bar
http://www.bathroomexpress.co.uk/acatalog/030401130104_qube_diverter_valve_two_outlets.html

 

[nickdesign]

thanks seco,

know of any simpler/small ones that are okay at low pressures?

am really struggling to find any like the pic of the one i posted for low pressures