If this is not the proper group, where should I post such a topic?
I have a smail tractor mounted hydraulic crane where the control valve assembly is a bit worn. Instead of just spending a lot of money in getting a suitable 'manual' control valve assy I consider checking a bit around to see if I can find a surplus electric proportional hydraulic control valve assy for at least 4 double-acting cylinders and replace my old control valves with this electric version. (I don't want wireless remote control, only wire)...
Are there different types of electric proportional valves for doible- acting cylinders or would almost any model do? (Given that flow and pressure are supported).
However despite that I work a lot with electronics I don't know how the solenoids normally are interfaced with the control pots. Do they use an electronic module between the joysticks and the solenoids which varies the current between the solenoids according to the position of the joystick, or is this circuitry normally included in the joystick assy? Thanks for some comments on this.
Does anyone here have suggestions on where to obtain such surplus equipment?
Other relevant comments and suggestions are highly appreciated :-)