Anybody know what kind of control valve is

mx842 · Jan 19, 2015

I bought this on e-bay a long time ago and I can't remember what the heck it was supposed to be for. I ran across it the other day and was thinking I could it to control my log lift and height adjustment on a 4 way wedge I'm working on.

I think it has a power beyond port.....well I guess that's what it is. I have searched all over and can't find anything like it. I think it is a Cessna valve or an Eton/Cessna because I have found a few that look similar but nothing I have found is exactly like the one I have.

It has some numbers on the back.....A971205LB and What I think is 31922 CCW. That could be a 8 rather than a 9 because there is a stamping in the housing that says 31822. When I peck in those numbers on google nothing comes up.

J_J · Jan 19, 2015

The valve you have does have BYD. Same as PB or PBY, or carryover port.

No reason it should not work, unless it has been well used.

You will know when installed.

It should work with your log lift and wedge lift.

Most log splitter valves do not have PB to feed the next valve.

I would suggest you install this valve first in the series flow path, and let the PB feed the log splitter valve. .

mx842 · Jan 20, 2015

I was thinking of that but the ports are smaller on this valve than the LS 3000 valve I have on the splitter now. I have a bunch of hyd fittings laying around and nothing I have will screw into this thing. That's why I wanted to try and ID this thing to find out the specs of the valve.

The single spool valve on the machine has 3/4" inlet and outlet ports and 1/2" work ports with regular pipe threads. I'm not sure what kind of ports this other valve has I don't have anything around here that match the type threads or fitting pattern but the in and out are what look to be around 3/8" and the work ports are smaller.

If I put this valve first in line I was wondering if it would provide enough flow for the spliter to operate properly as it already seems to be borderline now.

Another issue I have is control handles, another reason I wanted to ID the valve to see what kind of setup is used with this thing.

Thanks!!

J_J · Jan 20, 2015

Looks very similar to this Cessna valve.

Control Valves - Quadra Trading Corp - Handling Surplus Hydraulic Parts

3 SPOOL 16 GPM CESSNA OC VALVE

You will have the same flow through the valve but at a higher velocity.

mx842 · Jan 20, 2015

Thanks......I just found something like it on the Eaton site but the info they have say it a 5 GPM valve and the port sizing is different than the one you posted. I'm thinking the one you posted is more like what I have because of the port sizing.

J_J · Jan 20, 2015

If the ports on the valve is 5/8 in, the 5 GPM sounds about right.

mx842 · Jan 21, 2015

J_J said:
If the ports on the valve is 5/8 in, the 5 GPM sounds about right.

Thanks JJ, I spent a couple hours on the Eaton site and found out a little more info. The valve you posted up is a larger valve....GPM. It is a 315 series valve and they are 15 GPM valves. The one I have is, it seems a 5 GPM valve and from what the info they have on the Eaton site both have the same inlet and outlet sizes and work port size. What they are saying is that the inlet and outlet ports are 3/4-16 SAE and the work ports are 9/16-18 SAE threads. It also said the the power beyond port could be either/or the 9/16 or 3/4 SAE threads, I guess depending on how it was ordered or set up.

I know looks can trip you up sometimes but they look smaller to me but when I get out I'll pick up a couple fittings to check it out. I guess the best thing would be to take it with me so I can make sure I get the right ones.

So where does this leave me now? I assume this valve would not be large enough GPMwise to put my spliter valve down stream from it. I guess I'm back to the place I was before and will have to 'T' off the spliter valve to feed this valve and the other devices. How would the return plumbing be worked out from the 2 spool valve...or could It even work that way?

J_J · Jan 21, 2015

You can't tee off open center hyd system, as the flow will take the path of least resistance.

How much flow does your tractor have and do you run the engine at max rpm?

I would at least try it like I said and see if things work out for you.

You will still have the pressure, so the force will be the same.

mx842 · Jan 22, 2015

J_J said:
You can't tee off open center hyd system, as the flow will take the path of least resistance.

How much flow does your tractor have and do you run the engine at max rpm?

I would at least try it like I said and see if things work out for you.

You will still have the pressure, so the force will be the same.

I don't understand what you are saying about not being able to 'T' off an open center system. I mean I understand the taking the path of least resistance but if you are only operating one cylinder at a time shouldn't it work?

This is an old spliter I built almost 30 years ago. The cool thing is that the pump and valve that I put on it back then are the same ones Northern are still selling today. It has a 13 GPM 2 stage pump. It has a 4" X 24" stroke cylinder and is powered by a briggs 8 horse power engine. All of this stuff is original even the hoses and it's no telling how many cords of wood this thing has split. It does have a few leaks now but it still starts on the second pull and will split wood all day long with the best of them. Hehehe.....sounds like an advertisement doesn't it?:laughing:

So you think if I did put this valve up stream and feed the splitter valve off the PBY port I won't see any difference is speed and splitting force. I didn't want to go out and spend a bunch of money on hoses and such before I found out if this valve could to the job. Thanks for your help.

J_J · Jan 22, 2015

In open center hyd systems, all valves are in series, one valve feeding the next and so .

You did say the ports are the same, so it must be the spool size lands limiting the GPM.

In my opinion, if you want the protection of the PB part of the system, you would install the lift/wedge valve first, and the OUT of the log splitter valve would go to tank.

Any restrictions will increase the back pressure, but in your situation, I think not much.

Only way to know is to use the log splitter with no lift valve and measure the max pressure, then add the log lift valve is series and then measure the max pressure.