Label Pipes with Reducers and Reducing Valves

Refer to Label Reducers and Label General Valves.

If a reducer or reducing valve is inserted into a labelled pipe, both upstream and downstream sizes are inherited from the label of the pipe segment that the symbol was inserted into. The properties of the reducer or reducing valve must then be edited so that the upstream and downstream sizes are different.

If reducer upstream and downstream pipe sizes are identical, and error message is displayed. Upstream and downstream sizes may be the same for reducing valves.

If the size properties of a reducer or reducing valves are changed, the size of the pipe is automatically changed as appropriate. For example, if the upstream size of a reducer is changed, the size of the pipe upstream from the reducer is also changed to reflect this. If there was a reducer upstream of the upstream pipe segment, its downstream size property would be automatically changed as well.

In the same way, changes made to the size properties of a pipe segment are automatically applied to reducers and reducing valves at either end of that segment. For example, if the size of a pipe segment downstream of a reducer is changed, the downstream size property of that reducer is also changed to reflect this.

If a reducer or reducing valve is deleted, the pipe segment that the symbol was inserted into adopts the size of the segment that was upstream of the deleted symbol.