Select Pipe Components

When selecting a piping Component, all related items are also selected. For example, when selecting a Valve, the related Flanges and Gaskets are selected as well:

Note: The selected elements (known as the Selection Set), only constitute the graphical selection (as highlighted with a green line) ‑ the selected current element is (in the above case) still only the Valve element itself.

The above situation only applies where the arrive and leave directions of the selected piping Component are in line with each other. In the case of (for example), an Elbow, only the Elbow itself and any connected zero-length Components (for example, Welds) are selected. See below:

Diagrammatically, the above situation is:

If a Component which has arrive and leave directions which are in line also has Components which are directly connected to it, then those Components are selected as well. For example:

Connected Components are selected up to, but not including:

• An element which changes direction, for example, Elbow, Bend,

• A ‘directly connected-to element’, for example, Tee, Cross, where the CREF or CRFA is set

• A bad alignment between Components, for example, bad offset, alignment,

Further examples of Component selection sets are shown below:

Example: Flanged Valve within a straight leg of a Branch.

Example: Flanged Valve with weld-neck Flanges connected to an Elbow:

Example: Connected assembly between a change in direction and connected Tee:

Example: Connected assembly between a change in direction and an unconnected Tee:

Example: Bad alignment, between Valve assembly and one of its flanges: