Difference between these valves?

[canoetrpr]

I am reasearching adding a three spool remote valve to my Kubota L3400 rated at ~7GPM Plan to use two spools for TnT and one for who knows what.

I know that I need an open centered valve with power beyond which is designed to control dual acting cylinders.

Figured I am better off with a monoblock configuration so that I don't have to muck with putting the valve together.

I can't figure out why the price difference between these two and thought that those more hydraulically knowledgable than me might be able to shed some light and/or suggest a better / less expensive alternative.

1. 3 SPOOL 20 GPM GRESEN
2. 3 SPOOL 25 GPM PRINCE with the optional PB sleeve

Confused because the Prince seems to outspec the Gresen (not that I need either 20 or 25 GPM!) and is slightly smaller (which is a slight advantage).

Any others that I should consider that might work just as well and be more economical?

Thought about saving a bit and going to a 2 spool valve but figure I better go with 3 while I am at it

 

[kennyd]

Any others that I should consider that might work just as well and be more economical?

While either one of those valve will work, the ones you linked are HUGE and EXPENSIVE!

You should really consider the Prince SV series valves. Since there stackable, you can just do the two for your TnT now, it's easy later to add a spool if you need it. These valve also have a smaller footprint so they are much easier to mount then the ones you linked.

 

[herringchoker]

You won't regret going to 3 spools, or at least allowing for it as kennyd suggests. I used the BM40 series valve from Princess Auto when I installed remotes on my B7800. They're rated at 9 gpm continuous, 12 gpm peak. I added 2 remotes, now I'm seeing where a third would be handy.

 

[canoetrpr]

herringchoker:

Good to hear from a local Canuck on this. I was eyeing both the BM40 vavles at Princess Auto and they have the Prince 5000 series as well. The latter is quite a bit more than can be sourced at at surplus center and I didn't think that the BM40 had a power beyond sleeve? I imagine it must if you've got it going on your B7800. I'll check the catalogue closer.

kennyd:

I'm really a newb at all things mechanical. Figured I shouldn't go for a stackable set of valves cause them might be more complex for me to get set up. How much effort / complexity is involved in the Prince SV series? I imagine I get all the pieces separately and I have to hook them up. I know I'm being a tad paranoid here.

 

[kennyd]

kennyd:

I'm really a newb at all things mechanical. Figured I shouldn't go for a stackable set of valves cause them might be more complex for me to get set up. How much effort / complexity is involved in the Prince SV series? I imagine I get all the pieces separately and I have to hook them up. I know I'm being a tad paranoid here.

The valve goes together like a sandwich. The INLET and OUTLET sections are the "bread", and the spool sections are the "meat" all held together with 3 threaded rods, "toothpicks" if you will...and there is O-rings between each section(mayo).

Cleanliness is very important when assembling, but thats the case for your whole hydraulic system, not just the valve body.

Take a look HERE and scroll down to the SV series for the assembly insructions.

 

[canoetrpr]

kennyd:

You sure made that sound simple

I looked up a 3 spool Prince SV with power beyond and it comes to $237 at Surplus Center - within $15 of the monoblock 3 spool Prince 5000 series valve.

I do see the value of being able to add a spool but if I go with 3 remotes upfront I'm guessing I won't need any more.

A lower footprint sounds good but I can't find any dimensions on the SV valve to compare. Will keep looking.

Thanks!

 

[Willl]

(Canoetrpr, hope you don't mind if I borrow your thread a bit.)

I too want to add some extra spools, but in my case I'm planning to tie into the PB line my tractor uses for the backhoe.

Using a picture I stole from the site Kenny posted, can anybody tell me if my plumming plan is correct.

Using a valve like the lower valve #1, the plan is lines A and B would tie into my existing PB lines on the tractor.

Then I would also need a third line (C) tied into some yet unknown return port on the tractor.

Sound good so far ?. The cylinder lines are pretty easy to figure out.

 

[MJPetersen]

I too want to add some extra spools, but in my case I'm planning to tie into the PB line my tractor uses for the backhoe.

Using a valve like the lower valve #1, the plan is lines A and B would tie into my existing PB lines on the tractor.

Then I would also need a third line (C) tied into some yet unknown return port on the tractor.

in a large part it depends on how your tractor is plumbed at this point. Is the PB connection from your tractor the last link in the chain or does it continue to the 3 pt (for example)? Also what kind of hyd system do you have already? Do you need to have the pb connected when the back hoe is not installed?

If your new valve is not the last valve in the the chain and if you have an open center system, then your plumbing plan appears to be correct.

Mike

 

[MJPetersen]

While either one of those valve will work, the ones you linked are HUGE and EXPENSIVE!

You should really consider the Prince SV series valves. Since there stackable, you can just do the two for your TnT now, it's easy later to add a spool if you need it. These valve also have a smaller footprint so they are much easier to mount then the ones you linked.

Canoetrpr, This is EXACTLY what I had in mind to say, but when I first saw the post I did not have the time to write it. I think that what Kenny suggested is exactly what would fit the needs you described. They really are not hard to assemble. A valve that is closer to your flow requirements will be less expensive, smaller, and smoother than one that is much larger than your needs.

Mike

 

[kennyd]

kennyd:

You sure made that sound simple

I looked up a 3 spool Prince SV with power beyond and it comes to $237 at Surplus Center - within $15 of the monoblock 3 spool Prince 5000 series valve.

I do see the value of being able to add a spool but if I go with 3 remotes upfront I'm guessing I won't need any more.

A lower footprint sounds good but I can't find any dimensions on the SV valve to compare. Will keep looking.

Thanks!

It sounds simple because it is simple

According the the latest Surplus Center catalog I have, a 3 spool Prince Sv valve has these dimensions:
8 5/8" x 5 7/8" x 3 1/4" Shipping weight of 29 lbs.

Glad to help