Exchange Valves (PE)

Plant Engineering > Pipeline Tools > Change > Exchange valves

Use these functions to exchange a valve that occurs several times in one or several pipelines.

	Exchange valves, in one pipeline
	Exchange valves, in all pipelines

Exchange valves in one pipeline

Plant Engineering > Pipeline Tools > Change > Exchange valves, in one pipeline

This function enables you to exchange a valve occurring once or several times in the active pipeline with another valve. Proceed as follows:

1. Select the desired pipeline.
2. Identify the valve that you want to exchange.
3. Select the valve that should replace the selected part. Select the part from the HELiOS database or the HiCAD catalogue, depending on the specified part data source.
4. HiCAD checks how many times the identified valve occurs in the selected pipeline and replaces them with the new valve.

(1) Active pipeline, (2) Selected part, (3) Exchanged parts

After completion of the exchanging process, HiCAD will display a message showing show how many parts could be exchanged successfully.

If the exchange was unsuccessful for some parts, HiCAD will display an error log showing you the locations where the error occurred. The following cases are possible:

• The part was not exchanged, i.e. the old part is still there.
• The new part was already inserted, but the insertion could not completed successfully.
• The old part was already removed, but the new part could not be inserted.

Example of an error log

Here, the new part could not be inserted in both cases. Therefore the corresponding guideline part enabling the retrieval of the insertion location is shown in the log.

Double-clicking a text row in the log activates the corresponding part in the part structure, and highlights it in the ICN as well as in the CAD-drawing. The same effect can be achieved by marking a text row in the log and clicking the Show button. After finishing your evaluation of the log, click End.

Please note:

• The current Plant Engineering settings apply for part insertion. Only the settings for loose flanges on the Straight pipe tab will be ignored in order to make sure that loose flanges will actually be replaced by loose flanges in exactly the same places.
• If possible, the newly inserted part will be placed at exactly the same position as the old part, even if it has a different length. This means that the middle between connecting points 1 and 2 is located on the same coordinates.
• If the old part is joined at one connection (directly or indirectly, but not via a straight pipe) to another part that cannot be moved, the new part will be connected in the same way. However, if this situation applies to both connections of the old part, the new part cannot be inserted if it has a different length.
• 3-way, 4-way and corner valves will always be exchanged in such a way that the branching point or corner point, respectively, will remain the same. If parts that are not bound to a branching point or corner point are connected to these valve types (directly or indirectly, but not via a straight pipe), these will be moved in such a way that they suit the length of the new part.
• Parts which have been inserted via the HiCAD Catalogue can be exchanged with parts from the HELiOS Database and vice versa.

• You can also exchange valves that are not located on a guideline. In such cases, however, the following conditions must be met: The new parts to be inserted must have the same length as the ones that are to be replaced. Furthermore, new parts and replaced parts must have the same nominal diameter and connection type at their connecting points. Seals or weld gaps that may exist will remain unchanged and will be used for the new parts. Please note that these functions create temporary guidelines for the parts to be exchanged. These guidelines will be automatically deleted after completion of the action.

Exchange valves in all pipelines

Plant Engineering > Pipeline Tools > Change > Exchange valves, in all pipelines

This function enables you to exchange a valve occurring once or several times in the active pipeline with another valve in all pipelines. Proceed as follows.

1. Identify the valve that you want to exchange.
2. Select the valve that should replace the selected part. Select the part from the HELiOS database or the HiCAD catalogue, depending on the specified part data source.
3. HiCAD checks in which pipelines the identified valve occurs and exchanges the valves in all found pipelines with the new valves.

The progress of the exchanging process, as well as the currently processed pipeline will be displayed in a dialogue window.

If you click Cancel, only the processing of the currently processed pipeline will be completed. After this the function will be cancelled.

Please note:

• As with the exchanging of parts for only one pipeline, HiCAD will display a message showing you whether all parts could be successfully exchanged.
• The notes on the Exchange valves in one pipeline function do also apply here.

Pipeline Tools (PE) • Plant Engineering Functions