kubota 3 way valve VS 4 way valve: Kubota Review  -- Kubota Tractors Discussion Forum and Review kubota 3 way valve VS 4 way valve: Kubota Review -- Kubota Tractors Discussion Forum

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 10-12-2004, 12:12 Post: 98185
smwelden



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 kubota 3 way valve VS 4 way valve

What is the difference between a 3 way valve and a 4 way valve for controling the FEL? I choose the 4 way for my quote because it wasn't that much more, but am wondering if I really need it? What will it do that the 3 way won't?






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 10-12-2004, 12:54 Post: 98189
s chrand



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 kubota 3 way valve VS 4 way valve

I remember seeing this in some of the literature for the FEL for my BX, and when I asked the dealer he said that with the 3-way the down motiion of the FEL (not the bucket tilt) was gravity driven, not hydraulicly driven as it is with the 4 way valve. He then pointed out that either they didn't make the 3-way any more, or that he didn't bother quoting it to anyone, I can't remember which.
You want the 4-way.
David






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 10-12-2004, 13:49 Post: 98193
beagle

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 kubota 3 way valve VS 4 way valve

a 3-way valve operates single acting cylinders, or put another way, only supplies pressurized flow to one work circuit. A 4-way valve is required to supply pressurized fluid to both ends of a cylinder. Gravity is ussually in place to retract the cylinder.

A 4-way valve is required if you want to use the FEL valve for most other front implements that have double acting cylinders ( power both ways ). get the 4-way valve, it's worth the extra money even for loader operations. Power down is very usefull in many applications.






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 10-12-2004, 13:56 Post: 98196
shortmagnum

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 kubota 3 way valve VS 4 way valve

"Power down is very usefull in many applications."

Like when the front tires sink down two feet into a swamp hole. :-0






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 10-12-2004, 14:08 Post: 98200
beagle

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 kubota 3 way valve VS 4 way valve

Or when you favorite son sinks both ends two feet into a swamp hole, along with his truck that he was going to use to pull out the tractor.






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 10-12-2004, 14:47 Post: 98204
smwelden



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 kubota 3 way valve VS 4 way valve

how confident are you in this... from my research, the 4 way allows for an additional cylider to be operated... for example a clamping (4 in 1) bucket. I am confident that kubota would NOT manufacture a FEL that didnt' have power in both directions. For example, the dump cylinders on ANY modern bucket MUST have power bothways. Therefore, a 3 way valve would provide this since it is the standard option.






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 10-12-2004, 15:09 Post: 98206
beagle

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 kubota 3 way valve VS 4 way valve

3-way valve - single acting cylinders, 4-way valve - double acting cylinders. The "way" refers to the porting on the spool piece of the valve, or the number of "ways" the fluid flows.

For more information, and the other types of spools available for valves, go to Pricehydraulics.com and search through the valve section of their site. They have a good site and some useful information on the types and applications of different types of SCV valves.

I design hydraulic jacking and shoring systems for a living.






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 10-12-2004, 15:30 Post: 98212
beagle

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 kubota 3 way valve VS 4 way valve

By the way, I have the 4-way on my LA402 loader. 3-way was on option, I paid a couple bucks extra for the 4-way. No extra cylinder here. Remote circuits can be added through the Power beyond Port.






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 10-12-2004, 15:43 Post: 98213
AV8R



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 kubota 3 way valve VS 4 way valve

Sm: 3-way on a FEL is
1-Bucket Curl
2-Bucket extend
3-Loader arm lift
Loader arm drop would be done by gravity, therefore not needing power. This is the way a 3-way valve would power a loader.

For use on a modern FEL, you want a 4-Way.






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 10-12-2004, 16:01 Post: 98214
Murf

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 kubota 3 way valve VS 4 way valve

Beagle, the 3 way on a FEL is sort of a misnomer, it is actually a 2 way valve and a single-acting valve connected to the joystick instead of a pair of 2 way valves as we would normally see.

When they go from a 3 way to 4 way on the FEL there is no 'extra cylinders' added, the only difference is that the cylinders on the loader boom are double action instead of single action cylinders.

Best of luck.






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