PaulW_NJ said: (quoted from post at 19:18:36 12/17/09) I don't know much about hydraulics, but working in oil refineries for 25 years, if we had a pump that put out more flow than we needed, we simply installed a bypass, or kick-back loop. That is, installing a line from the pump discharge back to the low pressure side, with a needle valve in between. That way you could control whatever flow you wanted: the more you kicked-back, the lower the net output. Easier to correct too big a flow, than not enough.
Maybe you could try that . . . .
This will work to a certain extent.... as pressure in the system increases due to load on the snow blower, the by-pass flow will also increase... higher load= higher pressure (up to the 2000psi relief valve pressure)= more flow by-passed= less flow to the blower= slower blower speed... not what you need. If you have more flow than you need (not what I believe to be the case here, but don't know enough about the system to say for sure) there are pressure compensated flow controls available, but at higher cost. Been retired 7 years and don't remember the companies that made them, but should be several. We made them at one time (Cessna), but a lot of the good stuff went down the tubes when Eaton bought us in the late '80s.
This post was edited by IH fan at 21:04:15 12/17/09.
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