Generally, a flow divider with priority flow divides the pressurized oil: 3 GPM or so constant flow to the power steering, and the rest to whatever else you are running on the system. Usually, the "whatever else" flow goes through an open center valve that controls loader, remote hydraulic, or whatever.
So it will send a constant 3 GPM through the power steering system, and the turning of the steering wheel will direct the flow from that 3 GPM. If the wheel isn't turning, it just goes through the power steering system ( which is, itself, an open center system) and back to the reservoir.
Best way to envision an open center system is the pump, constantly pumping, to the reservoir, where the pressure is lost, and from the reservoir by gravity back to the pump, and on around again. The hydraulic applications are put between the pump and the reservoir. If you've got a 15 GPM pump, and the only application is a loader, the whole 15 GPM goes through the loader valves, and is diverted as needed to run the loader. If you're running a power steering system as well, then a priority flow divider ahead of the loader valve, so 3 GPM gets taken out for the steering (and returned to the reservoir by its separate hose), and 12 GPM goes through the loader valve, available when needed for the loader.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
