Wood splitter valve problem

[dbaer78]

I have a brave wood splitter that I modified with a log lift. When I added the valve for the log lift just plumbed the outlet of the splitter valve into the inlet of the log lift valve. It works fine but I have an ongoing issue with the splitter valve leaking at the back of the spool. Keep in mind this has happened on two valves. The first, a Cross valve, lasted about a hundred hours. I replaced the o rings in the spool and it lasted ten hrs and started leaking again. So, I replaced it with a prince valve today since I didn't like the cross valve anyway. I split wood for two hours today and my brand new valve is already leaking right where the old one did. I am afraid I caused this by not plumbing the valves together by using the power beyond ability on my log lift valve. Any one have any thoughts? Any help is greatly appreciated! Thanks, Drew

 

[J_J]

That is a good example of back pressure blowing out the seals.

I keep saying don't connect the OUT port of one valve to the input of another valve, but people still do it.

Always use PB if you can.

Did either of the valves have PB option?

 

[dbaer78]

Thanks for the reply. Yes the valve for the log lift has a pb plug. So I suppose the fix is to plumb the lift valve first then come off the pb to the splitter valve?

 

[Scooby074]

Thanks for the reply. Yes the valve for the log lift has a pb plug. So I suppose the fix is to plumb the lift valve first then come off the pb to the splitter valve?

yes:thumbsup:

 

[dbaer78]

yes:thumbsup:

Thanks. The valve that has power beyond is a Cross and I understand you have to take the pb plug out and install a pb "kit". Is this true? And if so is there a good place to find that kit?

 

[Scooby074]

Im not familiar with the cross brand, but usually there is a PB adapter plug, yes. You remove the solid plug from the PB port and install the PB adapter. That is then plumbed to the next valve. The existing "Out" port from the cross valve goes back to TANK.

Wherever you bought your Cross valve would likely have the PB adapter

 

[dbaer78]

Im not familiar with the cross brand, but usually there is a PB adapter plug, yes. You remove the solid plug from the PB port and install the PB adapter. That is then plumbed to the next valve. The existing "Out" port from the cross valve goes back to TANK.

Wherever you bought your Cross valve would likely have the PB adapter

Well the problem is I bought the valve at the local tsc store and they don't carry any accessories such as that. I'm sure google can help. Thanks for the help! I knew I should have done this in the first place... I Jst wasn't sure how or who to ask but this website has changed that!

 

[Scooby074]

Glad to help:thumbsup:

 

[J_J]

Can you show picture of the PB valve?

 

[dbaer78]

Can you show picture of the PB valve?

I will gladly get one in the morning.

 

[Leejohn]

Cross does have a web site. Maybe check there.

 

[dbaer78]

Here's a couple pics of the log lift valve that has the pb.

 

[J_J]

You can get a new log splitter valve for $70.

or

This is the log splitter/log lift valve you should have.

Has PB option.

Surplus Center - 2 SPOOL 25 GPM PRINCE LOG SPLITTER/LIFTER VALVE

 

[Leejohn]

Here is the link. Cross Manufacturing, Inc - Manufacturers of Cylinders, Gear Pumps, Valves, and Adapters! If you are putting a lift on, be careful when you 1st use it, it well be fast.

 

[dbaer78]

Another question.....when I hook up the power beyond on my log lift valve I will then have two return lines one out of the log lift valve and one from the splitter valve correct? Can these be teed together at the return filter or will that create some sort of backflow issue as well? Thanks to every one for the advice so far.

 

[J_J]

If you are installing the log lift valve first because the PB would feed the the log splitter valve, then the following is true.

You can tee them at the end of each valve, and run one return hose to the filter..

Do you know that the first valve will have priority concerning fluid flow.

For instance, if the log lift valve is first in the series path, then if you were using the second valve in line, operation of the log lift using max lever will stop the log splitter.

The log splitter valve is usually in the auto detent retract mode, and this is when the log splitter would stop.

You could get away with half lever and allow some fluid to flow to the log splitter valve, therefore using both valves at the same time.

No big thing, but just be aware of this.

Did you get the PB adapter for the PB port, if not, you would connect them in series as some have done, however at some risk.

If you can not find a PB adapter, then plug the PB port and connect the return port from the first valve to the IN port of the second valve.

You could use the PB port or the return port as the return, just plug one of them.

The reason is that an unused PB port is connected internally to the return port and they both will do the same job.

 

[J_J]

While looking at the Prince web site, I came across this question and answer.

Q: I just put a Prince control valve on and it’s leaking out the back of the valve. What went wrong?
A: There is a very good chance that the outlet line (return to tank line) has been pressurized. Just one tank line spike, over 300 psi, can cause the valve to leak at either the handle or the spool end cap.

Diagram for PB valve and log splitter except that you want to install the log lift valve as first valve.

http://www.princehyd.com/Portals/0/techFAQ/OpenCenterPbDA.pdf

 

[dbaer78]

While looking at the Prince web site, I came across this question and answer.

Q: I just put a Prince control valve on and it’s leaking out the back of the valve. What went wrong?
A: There is a very good chance that the outlet line (return to tank line) has been pressurized. Just one tank line spike, over 300 psi, can cause the valve to leak at either the handle or the spool end cap.

Diagram for PB valve and log splitter except that you want to install the log lift valve as first valve.

http://www.princehyd.com/Portals/0/techFAQ/OpenCenterPbDA.pdf

Thanks for all that info j j. That's everything I needed to know at this point. I couldn't get a better answer from the local hydraulic repair shop!

 

[yomax4]

If you are installing the log lift valve first because the PB would feed the the log splitter valve, then the following is true.

You can tee them at the end of each valve, and run one return hose to the filter..

Do you know that the first valve will have priority concerning fluid flow.

For instance, if the log lift valve is first in the series path, then if you were using the second valve in line, operation of the log lift using max lever will stop the log splitter.

The log splitter valve is usually in the auto detent retract mode, and this is when the log splitter would stop.

You could get away with half lever and allow some fluid to flow to the log splitter valve, therefore using both valves at the same time.

No big thing, but just be aware of this.

Did you get the PB adapter for the PB port, if not, you would connect them in series as some have done, however at some risk.

If you can not find a PB adapter, then plug the PB port and connect the return port from the first valve to the IN port of the second valve.

You could use the PB port or the return port as the return, just plug one of them.

The reason is that an unused PB port is connected internally to the return port and they both will do the same job.

Im not sure why I am not grasping this but I have the same deal going on. I have 2 prince log splitter valves that I would like to hook together for a lift and splitter as well. If I put a PB valve in the 1st valve, does it then hook to the IN on the next valve? Then the 2 out ports are T'd together and go to the filter and then to the tank.? If not, How much do you charge for a drawing> Thanks

 

[J_J]

Exactly as you said. Using the PB sleeve in the PB port.

The first valve must be PB and the returns can be tied together.