does Bobcat 753 have pressure compensating pump?

I need to install a Prince hydraulic pressure control valve and was told that if my Bobcat 753 has a 'pressure compensating pump' or is a 'closed center system" that I could block the return port on the new pressure control valve and not have a return to reservoir. Anybody know what I have? I sure would appreciate a 'hollah ! Thanks. Mark

I wouldn't block the return line from the control block.
Why do you need this valve? you are trying to reduce the pressure to a device you want connected?
The system is open centre, so when no functions are being operated, the oil just goes around and around.