Controlling proportional valve

I would like to control a proportional valve from the arduino but need some help.
The valve is a Argo Hytos PRM2-043Y11/04-12.
I found the description here: http://www.argo-hytos.com/uploads/media/Datasheet_PRM2-04_ha5105_EN.pdf
I do not have the electronic card described in the doc, just the valve.
This is a 12V and if I understand the docs (I am very new at this!) the current is up to 1.7 A (max 2.4).
My questions: Can I control this valve with PWM? If not are their shields available to make my job simpler?
Any help or pointers are greatly appreciated!
Thanks,
jh