SPIKER
Elite Member
Mad said it not me 
what he said is right abo9ut the power beyond, simply put if you put in a a valve without power beyond on you're tractor which has open center system, and you plumb the valve in so that it is the last item in the system you will be OK, BUT in most cases the last item in the system is the 3 pt lift. this will pose a problem if you plum in a non power beyond valve due to the fact that the Neutral (or open to tank connection on a non power beyond valve) will be pressurized when the last valve is put into a pressure situation. say lifting a heavy 3 pt item. this can often cause problems on the valve and or operation of the cylinders in that valves movement area.
as stated power beyond is a 3rd port for "pressurize-able fluid" to travel through. The return to tank lines are in a different hose and lets the valve operate normally when the down stream valve/3pt is used.
hope that made you as confused as I am now

Mark M
what he said is right abo9ut the power beyond, simply put if you put in a a valve without power beyond on you're tractor which has open center system, and you plumb the valve in so that it is the last item in the system you will be OK, BUT in most cases the last item in the system is the 3 pt lift. this will pose a problem if you plum in a non power beyond valve due to the fact that the Neutral (or open to tank connection on a non power beyond valve) will be pressurized when the last valve is put into a pressure situation. say lifting a heavy 3 pt item. this can often cause problems on the valve and or operation of the cylinders in that valves movement area.
as stated power beyond is a 3rd port for "pressurize-able fluid" to travel through. The return to tank lines are in a different hose and lets the valve operate normally when the down stream valve/3pt is used.
hope that made you as confused as I am now
Mark M