Re: Allan in NE: Relief valves!

Posted by Bob on November 12, 2006 at 10:47:47 from (69.178.229.154):

In Reply to: Allan in NE: Relief valves! posted by Tom R Ne on November 12, 2006 at 10:26:56:

Also, don't forget he doesn't have "power beyond" valves, and is connecting them in series, so if the relief in the first valve has to operate, there is no direct "return to tank".

If the second valve in the series happens to be being operated at the same time, and that cylinder reaches the end of it's stroke, the relief valve in the SECOND valve in the series then has to operate, too, and with a fairly high flow pump, the pressure the pump "sees" when these 2 reliefs in series are operating will be a LOT more than if only the first valve is being operated, with a clear "return to tank" for the bypassed oil.

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