Valve Control

The scraper I am looking at controlling currently has a Rexroth 4WE10E31/CG12N9DA on it for raising and lowering the blade.

Is there a proportional valve that is a drop in replacement for this?

Do I need a bypass so that the valve is not under constant pressure?

The tractor is old - 1997 - so nothing on board to help with this I presume.

What do I then need to connect the Arduino PWM output to the valve? Cytron? IBT2?

Thanks! Andy

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