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View Full Version : Valve families and k-factors



alazer
2007-07-16, 01:05 PM
I'm working on a set of valve families for my company and have run into the following problem. Under the element properties of the connector, all standard Revit MEP fittings and families are listed as fitting. Changing this to global gives access to setting pressure drops and linking those to a a k-factor table. The tables are set up in the pipekfactors.xml file. I do have the part type under family parameters set to Valve.

However, when I go to the pull-down to select the appropriate table, the only items that come up are from "Equipment", such as what I copied below.

<Table PartType="Equipment">
Bell Mouth Inlet or Reducer
- <SubTable Result="K" Number="1" Dimensions="0">
<SubTableData Coefficient="0.05" />
<Formula>FlowDirection == Out</Formula>
</SubTable>
</Table>

Valves (and elbows are similarly configured in this file, but I cannot get to them.

<Table PartType="Valve">
Ball Valve Full Port Full Open
- <SubTable Result="K" Number="1" Dimensions="1">
- <SubTableData1D X="D">
<XAxis>1.0 1.25 1.5 2.0 2.5 3.0 4.0 6.0 8.0 10.0 12.0</XAxis>
<Data>0.1 0.09 0.085 0.08 0.075 0.07 0.06 0.05 0.045 0.045 0.04</Data>
</SubTableData1D>
<Formula>D <= 12.0 && D >= 1.0</Formula>
</SubTable>
</Table>

Based on standard fittings being set up to not use this file (even though the fittings are listed with k-factor tables there) leads me to believe that Revit has not been set up to utilize this file yet.

Has anyone had this same problem? I also run into a similar problem with the duct fittings. Thanks.

Adam