If you want to build an extra hydraulic circuit on your tractor, this 2-circle hydraulic control block could be a good choice for you!

It has also floating function, which means that the section allows the hydraulic oil to flow freely in a certain position. In this case, the pressure in the working cylinder of the connected tool is removed in both directions, so it can be moved freely. In this way, ground tracking is ensured, e.g. using a snowplow. If this function is not used, the lever will return to it's initial position.