These values I use for my calculations when I need to compare flow velocity with recommended min and max values. I took these data from different sources: recommendations in technical manuals of Parker, Gates, Eaton and other hose and tubes suppliers.
These are average values from my collection of all supplier recommendations.
Sources:
Aug 31, 2019. Since Comotrol is part of Danfoss, Comatrol Easyvalve is not available anymore, so info about this software was removed.
Sep 25, 2019. URLs were updated in this post.
Dec 29, 2019. Info about QCAD was replaced with LibreCAD.
Oct 14, 2020. Info about nanoCAD has been added.
Oct 24, 2021. Info about Dassault Systemes DraftSight has been removed since there no free versions of DraftSight anymore.
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For my work I use AutoCAD LT or ePlan Fluid to draw hydraulic, pneumatic, lube and P&ID schematics. Companies where I worked and where I have the work now, provide this software because the price of them is unbelievably high for the regular individual.
One day, after reading of this article I decided to try to find something absolutely FREE for Fluid Power schematic design.
All software what I found, I divided into three categories:
Summary:
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There are two types of valve circuits can be used to control your system: “Open center circuit” and “Close center circuit”.
Calculations Notes: