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  1. #1
    Silver Member
    Join Date
    Aug 2005
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    102
    Location
    Hays County, TX
    Tractor
    Case IH JX95 4x4

    Default what is power beyond? + spoole valves

    I'm sorry if I'm asking simple hydraulic questions over and over, you know someday I may stop.

    So here it goes.

    1) what is "power beyond"
    2) Valves. 2 spool open center valve as in this ( Surplus Center Item Detail ). Break it down for me. # of inlet connections, is it just two ( coming from one remote )? I assume there are four outlet connections for using 2 double acting cylinders. Any more inlets and outlets? And what is open center? Am I completely off base?

  2. #2
    Advertiser kennyd's Avatar
    Join Date
    Jul 2003
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    11,826
    Location
    Westminster, MD
    Tractor
    John Deere 4110, 455

    Default Re: what is power beyond? + spoole valves

    1) what is "power beyond"
    Power Beyond is just a "loop" of hydraulic oil. When the tractor is running, the hydraulic pump is always pumping fluid, it is always moving and if it's stopped bad things can happen. When you "add" power beyond you are simply extending that "loop" to another valve, whether it like the one you linked, or a backhoe, or log splitter.

    2) Valves.
    That valve would have one inlet, and one outlet, It does not appear to have a PB outlet, or the capability of adding one.
    There are four "work" ports, two for each spool to connect to a DA cylinder.
    "Open Center" means that when the spools are in their neutral position (handles centered) the hydraulic fluid can flow freely from the inlet port to the outlet port, remember: Bad things can happen if you stop the flow of fluid from the pump...

    Clear as mud?

    Let me know if you need further explanations...
    KennyD
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  3. #3
    Bronze Member
    Join Date
    Dec 2007
    Posts
    69
    Tractor
    Kubota L2800 HST

    Default Re: what is power beyond? + spoole valves

    here is a typical drawing
    Greg Schmidt
    Bonnyville, Alberta
    Canada
    subzero@mcsnet.ca

  4. #4
    Bronze Member
    Join Date
    Dec 2007
    Posts
    69
    Tractor
    Kubota L2800 HST

    Default Re: what is power beyond? + spoole valves

    sorry forgot to attach
    Attached Files Attached Files
    Greg Schmidt
    Bonnyville, Alberta
    Canada
    subzero@mcsnet.ca

  5. #5
    Super Member flusher's Avatar
    Join Date
    Jun 2005
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    6,516
    Location
    Northern California-Tehama Co.
    Tractor
    2008 Mahindra 5525, 1964 MF-135 diesel, 1951 Farmall Super A, 1951 Minneapolis Moline BF, 1945 Oliver 60 Row Crop, 1949 JD B widefront

    Default Re: what is power beyond? + spoole valves

    Quote Originally Posted by RancherSam
    I'm sorry if I'm asking simple hydraulic questions over and over, you know someday I may stop.

    So here it goes.

    1) what is "power beyond"
    2) Valves. 2 spool open center valve as in this ( Surplus Center Item Detail ). Break it down for me. # of inlet connections, is it just two ( coming from one remote )? I assume there are four outlet connections for using 2 double acting cylinders. Any more inlets and outlets? And what is open center? Am I completely off base?
    Before breaking into the hydraulics on your tractor, you need to check with your dealer or a mechanic to be sure you get the right type of remote valve (open center or closed center). Which one is needed depends on the type of pump in your hydraulic system. If you select the valve incorrectly, you could damage that pump. As a minimum, get the service manual for your tractor and check the hydraulics section for info.

  6. #6
    New Member
    Join Date
    Jan 2002
    Posts
    3

    Default Re: what is power beyond? + spoole valves

    What is power beyond? As I view it, It is really quite simple. On a standard open center valve, when you stall the cylinder, the excess fluid will bypass through the relief valve and continue downstream through the return line to the tank.
    When you have a power beyond type valve, there is an extra hose in the valve body through which the hyd. fluid will flow in a relief valve bypass condition. Thus when you place another valve beyond the first valve (factory valve) and it is in an overpressure condition, the factory valve will then relieve the pressure at the factory preset pressure and route the fluid back to the reservoir through the extra hose mentioned above, and if there is a built-in relief on the second valve it may or not relieve depending upon it's setting.

  7. #7
    Bronze Member
    Join Date
    Dec 2007
    Posts
    69
    Tractor
    Kubota L2800 HST

    Default Re: what is power beyond? + spoole valves

    what type of tractor do you have ?
    do you have a loader on currently ?
    why do you want a another valve ?
    Greg Schmidt
    Bonnyville, Alberta
    Canada
    subzero@mcsnet.ca

  8. #8
    Silver Member
    Join Date
    Aug 2005
    Posts
    102
    Location
    Hays County, TX
    Tractor
    Case IH JX95 4x4

    Default Re: what is power beyond? + spoole valves

    thanks for all the responses guys. Subzero, I have a caseih jx95 with a quickie loader. I want to put a blade on the loader and the angling requires one more spool. Also I want to have a tnt 3pt system and still be able to have one or two remotes available for implements.

  9. #9
    Bronze Member
    Join Date
    Dec 2007
    Posts
    69
    Tractor
    Kubota L2800 HST

    Default Re: what is power beyond? + spoole valves

    follow the lines on your loader back to your tractor...
    is there 3 lines ?
    Greg Schmidt
    Bonnyville, Alberta
    Canada
    subzero@mcsnet.ca

  10. #10
    Platinum Member Iowachild's Avatar
    Join Date
    Feb 2006
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    982
    Location
    NW PA
    Tractor
    Kubota B2320HST

    Default Re: what is power beyond? + spoole valves

    Here is one of the better drawings I have seen. Basic Hydraulic System
    MIKE

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