WildBuckwheat - 9/5/2025 08:53

A typical universal application autosteer valve uses an off-the-shelf closed center proportional valve from a company like Eaton Vickers, Danfoss, ARGO-HYTOS, etc. Many of these valves have 2 simple coils, usually 12v but sometimes 24v. Sometimes instead of a coil it will have a canbus or analog voltage interface. For what you're asking, that off-the-shelf closed center proportional valve is "just a normal electrically operated hydraulic valve." If you are having a problem, you can go to a hydraulic shop and buy a replacement for that part.

That off-the-shelf closed center proportional valve is screwed onto an aluminum manifold, the design of which is typically owned by the autosteer company. That manifold will contain compensator valves, may contain blocking valves, load sensing circuits, a pressure or flow sensor to detect steering wheel override, shuttle valve, etc. That part is not "just a normal electrically operated hydraulic valve." The only place to get that aluminum block is from the autosteer company, although the stuff inside is standard hydraulic parts.

I've attached some images of different blocks and a diagram of the on with the purple sensor installed in a closed-center application with a free wheeling orbital.