I have Valtra T190, so I guess it is closed LS steering. How much for the valve for it? Do I only need to add hoses to make it work, do you have instructions how to install it?
Yes, only snakes are needed. The valve block has all the necessary valves and a pressure sensor built in.
Connecting is very easy, I will help you at every stage.
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Hey, baraki i send your email about hydraulic valve assembly i would like to buy one for my n141 ls.
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Hi @baraki , do you have a regulator to adjust the speed at which the cylinders turn? As it manages to adjust the speed at which the wheels turn, I understand that all the input pressure from the orbitrol is transmitted to the steering cylinder. So do the wheels turn sharply or am I wrong?
These are proportional valves, they set the flow in proportion to the PWM value applied to the coils. The valve for the OC system has a built-in load sensing system which redirects only as much oil to the proportional valve as needed at any given time, the rest of the oil flows on to the orbitrol. It works very smoothly and accurately, you can turn the wheels for fractions of a degree.
Thank you very much for the clarification. So the output signal from the Cytron is already the correct one for the PWM proportional valves?
Yes. Just plug it into the citron. A relay / mosfet is also required to activate the shut-off valves.
Would you be so kind as to tell me which model of mosfet I should buy. Do you have any wiring diagram so that I can get an idea.
What kind of PCB are you using
La PCB Kaoupoi 4.1
If you soldered all the components that were in the project then you have a mosfet to activate the valves on the board, just connect the cables.
Option to use a pressure transducer to use the full shutoff function in AOG? That would be better 
This is the standard on my every block.
I know that, but we worked out on AOG to work with a pressure transducer 4-20mA. So you can set the pressure kickoff in the software
Yes, I know, but the converters are much more expensive than the pressure switches. The sensors I use are adjustable with a screwdriver so you can easily set your preferred pressure. In practice, the system works well over a very wide pressure range, you don’t need to calibrate it in any particular way.
Of course, if someone wishes, I can mount the transducer.
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My baraki hydraulic steering valve arrived yesterday and it looks really good. I especially noticed a quality component from Argo Hytos, with whom I have only the best experience.
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Good afternoon @baraki , I have two curiosities to understand the system. It uses two relief valves (non LS system). Following the circuit from P. We find the first relief valve that if the set of proportional solenoid valves is closed, allows the oil to continue through T to the orbitrol.
If one of the solenoid valves is energised, this relief valve closes and then the oil continues to the diverter solenoid valve and non-return valve.
Following the system from the non-return valve I see that we find the second diverter solenoid valve and also the external pilot of the first relief valve.
I don’t quite understand this part. What exactly does the second relief valve do? I don’t understand the connection of the pressure switch, as I see pressure is constantly coming through the circuit from T.
I would be grateful if you could clarify these doubts. Thank you in advance.