Label General Valves

The labelling of general valves, e.g., ball valves, gate valves, etc., involves the placement of a tag, and optionally, closure, valve code and size date. This tag data may be inherited from the label of the owning pipe, as set-up in the Pipes - Settings Sub-Category of the AVEVA P&ID Project Administration program. If it is not clear which pipe is the owning pipe, the List Item Details procedure should be used to identify it.

Valve codes can be applied to piping valves; but not to instrument valves. The valve code can be automatically placed according to the entries for the associated project configuration options set in the Valves - Labels Sub-Category of the AVEVA P&ID Project Administration program. The code will automatically place itself in alignment with valve.

A general valve can be labelled as a Special Piping Item (SPP) by the addition of four configurable SPP labels to the valve label.

Valve tags and SPP labels do not have to be unique; it is possible for the valve and special piping item to have the same tag number.

When a valve is inserted into a pipe, the valve will inherit the size of the pipe into which it is inserted. The size of a valve in a process link may be manually increased, but not the size of a valve in a pipe.

If general valves are unlabelled, no warnings or errors are issued on output. Refer to Label General Valves.

See also Label Port Valves.

Use Valve Pattern Labels

The “patterns” facility is used to nominate a valve record, displayed on a drawing, to act as a representative for one or more line fitting item records, which are not displayed, but will be exported on output along with the displayed item.

The AVEVA P&ID Item Type for a pattern label is XPR. It is a good idea to configure all pattern labels to be a set colour, in the Item Types – Standard Sub-Category of the AVEVA P&ID Project Administration program. All users will then instantly recognize pattern labels on drawings that other users have worked on.

Details of valve patterns are edited using the Valve - Patterns Sub-Category of the AVEVA P&ID Project Administration program.

The valve which has been physically drawn on the drawing is known as the substitute item in the pattern; it is expanded on output into all its components which are detailed in this pattern. An extra field is present in the output files. It is called Pattern Item and has an * (asterisk) in it if the item has been defined as a pattern item.

To use the pattern facility, the pattern reference number is allocated when labelling any valve using the Valve Properties Dialogs. Refer to Label General Valves.

All data is validated on output for the pattern items as if they had been drawn on the drawing.