Create valves
When you click on the Add valve button without selection, the left panel shows a message :
Select 1 node
The selection mode is automatically set to POINT. You can so directly select a node.
1. Create a valve
- Select the current section/material in the specification box.
- Select a node.
- Click the Add valve button.
By default, the orientation of the valve is defined to Tangent (3) represented by a blue arrow.
You can decide to use the orientation tool by unchecking the option :
VALVE PROPERTIES (1) :
You have the choice between 3 types of valve :
- Simple valve
- Valve with middle point
- Valve with excentricity
| Property | Unit Metric | Unit USA |
|---|---|---|
| Length | m | ft |
| Mass | ton | kips |
| Thickness factor | - | - |
The length must be defined by the orientation tool.
The valve with excentricity has 4 more options :
| Property | Unit Metric | Unit USA |
|---|---|---|
| Bx | m | ft |
| By | m | ft |
| Bz | m | ft |
| Filled stem | - | - |
The vector B (Bx, By, Bz) represents the excentricity in global coordinates.
DATABASE (2) :
To save time, you can also directly select a valve from database :
Click on the Database button, select a Library and a Valve. The OK button will appear.
The Nominal pressure, the Type and the Connection are just informative.
The tables will be filled automatically :
Click here for more information about creation of library of components.
LABEL :
You can define a label to the valve. The labels are shown with the node names view button.
X-AXIS DIRECTION (3) :
You can define the X-axis vector by defining Xx, Xy, Xz in global coordinates.
You can then define the second point of the valve thanks to the Orientation tool.
Click here for more information about the orientation tool.
Create the valve :
2. Modify/Remove a valve
Change the Selection mode to ELEMENT and select a valve :
Click here for more information about the selection tool.
You can change the properties of the selected valve (except the length).
LABEL :
You can modify the label of the valve. The labels are shown with the node names view button.
SECTION AND MATERIAL :
You can change the specification and section/material of the valve.
X-AXIS DIRECTION :
You can change the X-axis vector by defining Xx, Xy, Xz in global coordinates.
Click on the Modify button to change the selected valve with these new properties.
You can undo this command.
Click on the Remove button to delete the selected valve.
You can undo this command.
3. Insert a valve on an intermediate node
Click on the Add valve button and select an intermediate node between 2 elements.
Fill the properties (see §1) and select the insertion mode :
- Shift forward
- Shift backwards
- Reduce the next element
- Reduce the previous element
- Symmetrically reduce the neighboring elements
ATTENTION, if the length is null, no mode will be proposed (empty list)
Based on the length of the valve and the lengths of the neighboring elements, some mode could be hidden.
Select for example “Reduce the previous element” and click the Insert button :
You can undo this command.