Shut Off Valve for my 3rd SCV???

[mike48130]

You can check out this thread.
https://www.tractorbynet.com/forums/hydraulics/399011-manual-hydraulic-multiplier-divider-dual.html

Maybe this would work.
Manual Hydraulic Multiplier, SCV Splitter / Diverter Valve Kit with Couplers, NPT

 

[FredSG]

Thanks Mike,

The multiplier was suggested already, but I don't know if it would work . . . it would be an expensive gamble, and I would need two of them.

Thanks for the suggestion . . . very much appreciated.

FredSG

 

[Zebrafive]

I own a John Deere 4052R. It has a front and rear 3rd SCV installed, and a Tee was installed so both lines to the front and rear are active all the time.

The front 3rd SCV is connected to my grapple, and I work the grapple from a switch installed on the joystick.

I would like to install a Hydraulic Top Link on my tractor and connect it to the rear 3rd SCV. But, I have been told I cannot connect an implement (grapple) to the front SCV and the rear SCV (HTL) at the same time. One of the implements has to be disconnected.

So, I was wondering if there is some kind of manual diverter or shut off valve with an Off-On button or lever that I could just plug into the rear SCV or front SCV without changing my current hydraulic setup. So when I want to use the grapple connected to the front SCV I would just put the manual diverter plugged into the rear SCV in the Off position and all oil would only flow to the front SCV; and when I wanted to use the Hydraulic Top Link, I would just put the manual diverter plugged into the front SCV in the Off position and all oil would flow to the rear SCV.

Does any of this make sense to you? Would two manual diverters (shut off valves) with an Off-On lever or button work as I have described above? The attached diagram is sort of what I'm trying to describe.

Also, what I don稚 fully understand is - if there is no implement attached to one of the 3rd SCVs, the flow of hydraulic oil is cut off to that SCV. So why can稚 some type of shut off valve be installed on that same SCV that can also be plugged into with an implement?

Thank you for reading this and for (if you decide to) taking the time to respond.

FredSG

I think you are confusing SCV with quick couplers.
When you say you have front and rear 3rd SCV installed, it sounds like you have TWO SCVs installed.
I think you mean you have ONE SCV installed and quick couplers routed to both front and rear using tees.

Is your 3rd SCV actually a 3rd valve, or diverter from your loader valve's curl function?


If it is an additional valve, adding a diverter to switch from front or rear quick couplers would be the easiest.


TWO three way valves, one for each work port of your third SVC, would work, BUT you would have to be diligent about switching both valves to front or rear quick couplers. Maybe they make a "double" (might not be correct name for it) 3 way valve that one lever switches both at the same time. It would have 6 ports, not 4 ports as you have drawn.

If what you want to do is have a double shut off valve (what I think your drawing shows) at your tilt cylinder to shut it off only when the grapple is on, that would work for grapple use, but if you wanted to use the tilt cylinder, you would either have to have the grapple disconnected or another double shutoff valve for it.

 

[LouNY]

I own a John Deere 4052R. It has a front and rear 3rd SCV installed, and a Tee was installed so both lines to the front and rear are active all the time.

The front 3rd SCV is connected to my grapple, and I work the grapple from a switch installed on the joystick.

I would like to install a Hydraulic Top Link on my tractor and connect it to the rear 3rd SCV. But, I have been told I cannot connect an implement (grapple) to the front SCV and the rear SCV (HTL) at the same time. One of the implements has to be disconnected.

So, I was wondering if there is some kind of manual diverter or shut off valve with an Off-On button or lever that I could just plug into the rear SCV or front SCV without changing my current hydraulic setup. So when I want to use the grapple connected to the front SCV I would just put the manual diverter plugged into the rear SCV in the Off position and all oil would only flow to the front SCV; and when I wanted to use the Hydraulic Top Link, I would just put the manual diverter plugged into the front SCV in the Off position and all oil would flow to the rear SCV.

Does any of this make sense to you? Would two manual diverters (shut off valves) with an Off-On lever or button work as I have described above? The attached diagram is sort of what I'm trying to describe.

Also, what I don稚 fully understand is - if there is no implement attached to one of the 3rd SCVs, the flow of hydraulic oil is cut off to that SCV. So why can稚 some type of shut off valve be installed on that same SCV that can also be plugged into with an implement?

Thank you for reading this and for (if you decide to) taking the time to respond.

FredSG

If I am understanding your post correctly you have a valve going to a pair of tees,
these tee feed two ways one one line from each to the front and one from each to the rear.

If so and the device you have in your sketch has two more ports that are the feed ins what you have could replace the tees,
one position would feed forward and the other position would feed rearward.

This is a similar valve from Surplus Center;
1/2" NPT 2 GPM Double Selector Valve | Selector Valves | Hydraulic Valves | Hydraulics | www.surpluscenter.com

This could do it electrically;
13 GPM 12/24 Volt DC SAE 8 Solenoid Operated Double Selector Valve | Selector Valves | Hydraulic Valves | Hydraulics | www.surpluscenter.com

or this;
SAE 12 15 GPM Double Selector Valve 12 Volt DC P15438-2 | Selector Valves | Hydraulic Valves | Hydraulics | www.surpluscenter.com

 

[FredSG]

Thank you Zebrafive and LouNY for posting,

Maybe I used the wrong terminology in trying to describe what I am trying to do with my tractor front and rear couplings. So, I've posted a few photos to better explain and describe my setup.

I asked my dealer to create a coupling connection for my Grapple.
And this is what they did:

"I just laid this hydraulic diagram out with one of my techs and the best way is to add the bw16414 line kit and connect it to the blv10763 (which you already bought). We would create a tee to allow the oil to go to the back as originally planned or to the front if you had a grapple hooked up. The only limitation to this is you can't have something plugged into the back 3rd port and the front 3rd port at the same time (which you wouldn't anyway)."

Tee Connection (Front to Rear Couplings)

Tee Connection (2nd view of Front to Rear Couplings))

So this is what I have for my Grapple.
Dual Couplings for Grapple Hookup (3rd SCV)

I can work the Grapple using my Joystick and switch on the Joystick.
Joystick and Switch for Grapple

So, when I'm using my Grapple oil is flowing to the Grapple and I'm working it from my Joystick and switch. At the same time nothing is plugged into the Rear Couplings.

Rear Couplings (3rd SCV)

This is my long question: if there is no implement attached to the Rear dual Couplings, the flow of hydraulic oil is essentially cut off to these Rear Couplings (because nothing is plugged in). So why can't some type of shut off valve be installed on those Rear Couplings that will accept and allow an implement to be plugged in until needed? In this situation, the Joystick is working the Front Couplings.

And when the rear implement IS NEEDED, a similar shut off valve at the Front Dual Couplings will be closed to prevent oil from going to the grapple (in this example). In this situation, the Joystick is now working the Rear Dual Couplings.
Just thought I'd try to explain it one more time.

Thanks for reading this.

FredSG

 

[aczlan]

Personally, I think that this valve would be ideal for what you want to do: 6.6 GPM 12 Volt DC Double Selector Valve DFE | Selector Valves | Hydraulic Valves | Hydraulics | www.surpluscenter.com
That would replace the tee between your front and rear quick connects. One direction is normally open so you can have your front valves be normally connected and when you turn it on, the rear valve will be connected instead of the front valves.
You would need a place to put in another momentary on switch to control it.

Aaron Z

 

[ericm979]

OK, I think I understand what you have now. You have a 3rd function whose work ports are teed into two sets of quick connects. Funky. (I see that other people figured it out already).

What you're suggesting will do what you want but it's the hard way. You'd have three valves controlling two sets of cylinders. If they're mechanical you'll need to get off to switch them (or the one at the front anyhow). If they're electronic you'll need to have a set of switches. If you (or someone else operating the tractor) fail to set the valves right you operate the wrong set of cylinders by accident. You have to have both new valves in the right position in order to do the thing that you expect. I'd consider that a user interface failure.

It's kinda cheesy to have quick connects in the middle of permanently installed stuff.

I feather my top cylinder often, most notably to keep the implement from slamming into the ground. There will be no feathering with your proposed setup, it's only on or off. You can add restrictors but then you're limited to one speed of operation.

You could replace the two tees with a 6 port diverter valve, either mechanical or electric. That would let you divert the flow from the 3rd function to the front or rear outlets from one valve. While the pics show limited space where the tees are, you can put the valve anywhere and run hoses.

Another solution would be to add an extra valve body to the system. If you're planning on also having a tilt cylinder I'd recommend this, because you can mount a two spool valve on the fender or wherever and have it control both cylinders. That would be more logical in that the levers always do the same thing.

 

[BukitCase]

I agree with Aaron's suggestion (AND Erics); that's a very good price on that type valve. At first I thought they couldn't be "stacked" due to the offset on the ports, but if you look at BOTH sides the mating surfaces have the OPPOSITE offset on the other side, so the ports would be aligned when stacked. You should ask surplus center before "assuming" tho, looks can be deceiving. the valves I have use sae ports for single use and O rings between valve sections when stacked...
"stacking" allows you to add even MORE paths just by adding another valve and switch. It looks like this



There are switches available that are built into loader grips, so you don't even have to move your hand away from the joystick to change functions. Try googling "scorpion control grip" for one example.

Looks like surplus center does NOT carry the connectors, but no biggie -

Amazon.com: Deutsch DT 4-pin Pigtail Kit 14AWG Pure Copper GPT Wire, Made in USA: Automotive

Amazon.com: Deutsch DT 4-pin male: Automotive

HTH... Steve

BTW, those "L" connectors on the valves are 6801 and 6801LL, here

SAE Straight Thread (ORB)

Those will allow "over-under" mounts as seen in the pic; regular and medium length will NOT.

 

[aczlan]

I agree with Aaron's suggestion (AND Erics); that's a very good price on that type valve. At first I thought they couldn't be "stacked" due to the offset on the ports, but if you look at BOTH sides the mating surfaces have the OPPOSITE offset on the other side, so the ports would be aligned when stacked. You should ask surplus center before "assuming" tho, looks can be deceiving. the valves I have use sae ports for single use and O rings between valve sections when stacked...
"stacking" allows you to add even MORE paths just by adding another valve and switch. It looks like this

View attachment 643503 View attachment 643504

There are switches available that are built into loader grips, so you don't even have to move your hand away from the joystick to change functions. Try googling "scorpion control grip" for one example.

Looks like surplus center does NOT carry the connectors, but no biggie -

Amazon.com: Deutsch DT 4-pin Pigtail Kit 14AWG Pure Copper GPT Wire, Made in USA: Automotive

Amazon.com: Deutsch DT 4-pin male: Automotive

HTH... Steve

BTW, those "L" connectors on the valves are 6801 and 6801LL, here

SAE Straight Thread (ORB)

Those will allow "over-under" mounts as seen in the pic; regular and medium length will NOT.

As I understand it, the OP currently has 6 pairs of hydraulic quick disconnects on the tractor which are connected to 5 valves.

Two pairs are for the loader (valves 1 and 2), two pairs are connected to one lever for the front and rear quick connects (valve 3, the ones in question here) and there are two pairs that only go out the back (valves 4 and 5).

Aaron Z

 

[FredSG]

Many thanks, Aczian, Ericm979, and Bukitcase for your posts and links,

I really appreciate your taking the time to respond to what I am trying to do. I thought I included all the information, but I left a few things out.
First of all, I want to keep all the plumbing I have installed as is . . . secondly, I don't feel I have the ability to do any changes to the plumbing myself, which is why I was hoping to find JUST a plug in type On-Off valve with a lever or knob control. So ideally what I was looking for was a manual valve that would just plug into the existing front and rear dual couplings to control oil flow to each end. And these manual, plug in valves could removed at any time if I wanted to connect either front or rear implement to the actual dual couplings as is normally done.

Many thanks for your replies and suggestions . . . very much appreciated.

FredSG