Re: Hydraulics Questions

Posted by Gerald J. on November 11, 2006 at 09:40:27 from (67.0.97.139):

In Reply to: Re: Hydraulics Questions posted by Allan In NE on November 11, 2006 at 05:45:35:

There are two regulators in your valve. They are independent. The pressure regulator is a shunt regulator, it leaks off excessive pressure. I has no effect on flow until the cylinder is loaded and it takes more pressure to move the load than the pressure regulator is set for. The flow regulator is an orrifice, perhaps with a screw in it that limits flow by adding pressure drop in the hose to the cylinder. Its a series device.

5 gpm moves a 3" cylinder 8" in 5 seconds. Moving that 3x8 cylinder faster usually means banging the piston against the end because the operator can't react fast enough. Heaving a loader from ground to 6' in 10 seconds tends to toss the load or the operator out of the seat as it jerks the tractor around. Sure you can feather the valve if you sandpaper the calouses off your fingers in preparation for safe cracking. With the flow set back to 5 gpm, you can wear ski gloves and still not break things with the hydraulics.

You would be best off to reject these single valves without power beyond and go buy a stack valve assembly from Northern, Baum, or Burdens with two sections MADE for single acting, and one section made for double acting. The sections cost the same either way.

You NEED the power beyond connections for your single valves so they work like a triple valve otherwise they won't work well.

Gerald J.

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