Can I tee into PB and return for extra valve?

[DiskDoctr]

This is a Nimco 10373-2s (CV 112) with power beyond on my Mahindra 3510 loader valve.

WHY couldn't I add Tees to the PB to supply a new single spool, and into the Return for the return from the new spool?

For a grapple. The PB currently powers the rear remote. No issue or concern on priority.

Is this too simple?

 

[Rich B1]

Too simple.

Your existing PB goes to P on your valve. New valve PB goes to the PB on the tractor. The T line can be connected with a tee

 

[kennyd]

You cannot tee PB lines...all valves need to be added in series.

Fluid, like electricity, will "take the path of least resistance", so if you tee or parallel a new valve in, when it commands work the fluid will just go back to the tank through the other one.

 

[DiskDoctr]

...if you tee or parallel a new valve in, when it commands work the fluid will just go back to the tank through the other one.

Duh! Thanks fellas!

 

[DiskDoctr]

Too simple.

Your existing PB goes to P on your valve. New valve PB goes to the PB on the tractor. The T line can be connected with a tee

Ahh...yes! Thank you!

 

[Tx Jim]

You cannot tee PB lines...all valves need to be added in series.

Fluid, like electricity, will "take the path of least resistance", so if you tee or parallel a new valve in, when it commands work the fluid will just go back to the tank through the other one.

Ditto what Kennyd stated no hyd component will operate correctly when tee'd into on an open center hyd system.

 

[rScotty]

This is a Nimco 10373-2s (CV 112) with power beyond on my Mahindra 3510 loader valve.

WHY couldn't I add Tees to the PB to supply a new single spool, and into the Return for the return from the new spool?

For a grapple. The PB currently powers the rear remote. No issue or concern on priority.

Is this too simple?

It is as simple as can be. You cannot just "T" into a pressure line and add a valve. But what you can do is to use the Power Beyond (PB) port to daisy chain as many valves as you like until fluid friction eats up all your pressure.
The only rules are:
1. Power steering always has priority. PS has its own pressure feed and its own return path. PS does this by either having its own pump or else by being fed by a partial diversion valve right from the main pump. That diversion % to the power steering has to happen before you get to use the remaining hydraulic flow for any other purpose.

2. The Power Beyond (PB) port on each control valve stack then can feed the Power In port on the next valve stack in your daisy chain, so all the valves except the last one in the chain must be valves with Power In, Return, and PB ports. Often the last one in the chain is actually the tractor's power to the 3pt which works out just fine because it's return is internal.

3. Each control valve stack will have it's own "return to tank" port and each return must be plumbed separately from each valve stack back to the Tank or Sump. So you will have as many return lines as you do valve stacks. Each return works far better if it has low or no back pressure, so the various return lines can be joined together, but do so with a Y into a larger hose instead of a T into same size hose.
Good Luck,
rScotty

 

[DiskDoctr]

FYI. This 3510 has a separate Power Steering pump. I think the 4110's have a single larger pump?

 

[rScotty]

FYI. This 3510 has a separate Power Steering pump. I think the 4110's have a single larger pump?

It doesn't matter if you are going to start your chain of valves from PB port on the existing FEL control valve stack.
No matter how got its flow, by the time the remaining flow gets to the FEL control, the PS already has the priority it needs.

 

[jigs_n_fixtures]

From the Summit sight. They jut go in series.