Loader valve

[drwho]

I have an M5030SU 4WD Kubota with an M1000 loader. The loader did not come with a control valve but with hoses to connect to the back of the tractor and the valves are mounted on the side of the tractor next to the 3pt controls. I need at least one additional valve for dumping my bailer and the cylinder for my rear hay spear. I am thinking about adding a valve for the loader which would free up the two others.
From reading a lot of post I think I can tap into the supply line from the pump at a coupling on the side of the tractor and use add a valve with power beyond. I think this is how it works but please let me know where I go astray.
A line from the pump would go to the new valve and a line would go from the power beyond back to the other valves (placing the new valve in series with the existing valves). There would also be a valve from the new valve to return fluid. I think the new valve should be closed center with the power beyond addapter to supply pressure to the following valves. The Kudota loader book shows a valve with cable remotes which would be a great space saver.
I like the look of the Brand Hydraulics Monoblock Loader Valve, Model# PLV22TSTKAB which is sold at TSC.
I really appreciate any help and suggestions on possible valves and their configuration.

 

[SSdoxie]

Your are on the right track but the control vlave needs to be "open center" to allow oil to go through to the rear valve when loader not in use.

 

[drwho]

I think I see. I thought the supply to the existing valves that follow the new valve would be from the power beyond port and that the open center would allow flow to the sump and not allow full pressure to the last valves.

 

[drwho]

I guess that open center does not mean that with the handles in neutral position the flow is to the return line?

 

[drwho]

So the flow from the pump goes to the loader valve input port and a line from the power beyond port goes to the next valve and a return line goes to the sump. When one of the loader valves is used the fluid from the cylinder goes the return port and when the handle is in neutral full flow goes to the power beyond port to supply following valves?

 

[kennyd]

So the flow from the pump goes to the loader valve input port and a line from the power beyond port goes to the next valve and a return line goes to the sump. When one of the loader valves is used the fluid from the cylinder goes the return port and when the handle is in neutral full flow goes to the power beyond port to supply following valves?

Yes, you got it:thumbsup:

 

[J_J]

Your fluid path should be , pump, new valve with PB, FEL valve, 3pt.

The fluid through the FEL valve, and cyl fluid will exit from the OUT/return port to the 3pt, as the FEL valve has no PB. The new valve will need a return to tank hose for the cyl fluid.

 

[Farmerford]

Be sure you don't insert the new valve into the pump circuit upstream of the system pressure relief valve. If the PRV is internal to the pump then you will probably be downstream of it, and okay. But if the PRV is in the transmission housing (or hydraulic sump if separate) your new valve will be upstream of it; in that case you will need a system PRV with your new valve.

Many Kubotas have a manifold block on the side of the transmission housing that lets you insert the FEL valve in the circuit.

 

[drwho]

Yes my tractor has the existing valves on the side of the transmission that I have been using for the FEL. The diagrams of the Kubota valve in the loader book show it being tied into the pressure line from the pump where I planned to connect.
All of the valves that I have been looking at list an adjustable relief set at 2000 pounds or more.
I have been looking at the Prince and the Brand valves. Any suggestions of other valves or if one brand is better than others? Anyone have information on cable remote joystick control for the FEL valves?

 

[J_J]

Surplus has these.

Surplus Center

Baileynet.com has these.

Look under Directional control valves. accessories.

New Hydraulic Cylinders and Products