Valve Main Window
This window is used to supply input data for the valve. The minimum input data requirement is an entry for one of the Pressure Specification Choices. If there are multiple product streams leaving the valve, you must specify the phase condition for each stream.
Pressure Specification
Select one of the following parameters and enter its corresponding value:
Pressure Drop : Decrease in outlet pressure over the inlet pressure. The default value is zero (fully open valve).
Outlet Pressure : The absolute pressure of the product stream leaving the valve.
Alternatively, instead of entering a value for the selected parameter, the numeric value may be referenced using the Define system relative to any available unit operation or stream parameter calculated elsewhere in the simulation. See Valve Parameters Available for Cross-Referencing for more details.
Product Phases Button
If there are two or more product streams leaving the valve, this button becomes available. You must then specify the phase condition of each of the product streams through the Product Phases Window which is displayed when this button is pushed.
Related Topics
Valve Unit Operation - Technical Information