3rd valve hydraulic control

[J_J]

Ok, thanks. I wasn't sure if I could add another block in the loader controls and control it with electric solenoids

I am not sure what you mean by your statement.

A 3rd function valve can be added anywhere in series with the flow. If it is the first valve in line, it must have a relief valve. On a tractor, it can't be last as the 3pt is the last valve in the hyd system.

Are you talking about a selector/divider valve that goes in the curl circuit so you can use either the curl or the grapple?

 

[Bradbilt]

No. I was talking about another spool right at the loader control. I assume there are 2 there now. One for the boom and one for the bucket. I want to add a 3rd one for the grapple.
The 3rd one instead of having a rod controlling it, would have solenoids controlling it.

I am not sure if that is even possible

 

[J_J]

In post 2, I posted a 3rd function valve and sub plate that should work for the grapple.

 

[Bradbilt]

Ok. but how do I tie that in to my loaders hydraulics?
Is there special fittings or would that just get sandwiched in there some how
Also, my tractor has a 21.5 GPM capacity, so I guess I should go with this one
SAE 12 20 GPM DOUBLE SELECTOR VALVE 12VDC P15438-1

 

[J_J]

Does your FEL have PB?

If it does, just add the solenoid valve and subplate in series after the FEL.

PB from FEL valve goes to the subplate P port, and the subplate T port will go to the next valve. downstream.

Your 20 GPM hyd flow is going to give you a very fast grapple. You can use an orifice or an adjustable needle valve to slow it down.

If you use total flow for the FEL, the subplate will have none.

Thick is to use only half lever, and then some hyd flow will pass downstream.