Re: priority flow valve

Posted by Nat 2 on January 25, 2007 at 11:38:00 from (64.80.110.27):

In Reply to: priority flow valve posted by Hydro on January 25, 2007 at 10:17:08:

A priority valve is DEFINITELY necessary. It needs to be installed between the hydraulic reservoir and the two-way valve. Otherwise, you will have no power steering.

Your two-way is "open center" which means that hydraulic fluid flows straight through it and back to the reservoir if it's not operating a cylinder. If you try to run two parallel circuits, one to the two-way, and one to the steering, the hydraulic fluid will take the path of least resistance. In other words, every time the steering motor asks for pressure, the fluid will flow through the two-way valve.

Just FYI, but connect the priority flow to the steering. In a fit of absolute brilliance several years back, I told Dad he should hook the priority flow to the two-way valve... BONEHEAD! Didn't notice it until I was trying to steer the two-rake hitch on a very hilly field. It's no fun when you need to turn the tractor and the rake at the same time going down a hill, and the steering locks up!

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