6.1.18. Fitting components placed on pipe-runs<br>

### 6.1.18. Fitting components placed on pipe-runs

Fitting components cannot stand alone in the project, they can only be inserted into another basic component.

All valves inserted into the system must exist in catalogues or have their pressure drop or Zeta/Kv values specified. Orifice plates, air bleeders, filters, thermometers and other have no association with catalogues.

There are some limitations on the number of components placed in this manner, irrespective of their use or function.

- Valves (placed on pipe-runs): /

- Orifice plate (placed on pipe-run):

“Valve” component data:

Valve

Selection field. Select valve from catalogue or specify Kv, zeta or pressure drop. After selecting valve type from list the drawing symbol is modified accordingly.

Zeta / Kv / Pressure drop (optional)

Numerical field. You can enter the values directly square brackets [] for zeta, round brackets () for Kv, braces {} for pressure drop. Applies only to components not in catalogue.

Label location

Selection field. Designed to move the label text. Clicking the button to the right of the field opens a special window with four arrows. Clicking the arrows makes the label move in steps in the selected direction. This field is useful when moving multiple valve labels after marking a group of valves. You may also move the valve label by dragging the symbol.

Label type

Selection field. You can define various manners of describing the valve. Here you can indicate which label will be used for the given valve or you can open an appearance configuration window. After defining a new label it is then available in the pull-down list in the table.

Rotate dwg.

Selection field. Manner of drawing the valve (parallel orientation, vertical orientation, etc.).

Align horizontally

Selection field. Align label horizontally.

Head (optional)

Selection field. Select valve head from catalogue list.

Inlet diam. (optional)

Selection field. In case of a valve with known flow resistance you can select from list its inlet diameter.

Outlet diam. (optional)

Selection field. In case of a valve with known flow resistance you can select from list its outlet diameter.

DP min. [kPa]

Numerical field. Minimum pressure drop across valve. Value in brackets is default value specified in calculation options. You may also specify the value individually.

Draw imp. tube / bleed pipe.

For throttling type differential pressure valves it is necessary to have a component that will provide a pressure impulse. When a pressure regulator is inserted, two valves are placed on pipe-runs. These valves must have appropriate types assigned in the table. These valves are connected in the drawing by means of an impulse tube. This impulse tube can be hidden or displayed in the drawing.

Other fittings placed on pipe-runs:

- Fixed points / , sliding points / ,

- Components of the type: 90° deflection , 45° deflection , 90° elbow , running trap , offset , expansion component (you can select a defined component from manufacturer’s component or retain the default setting).

- Air bleeders / , thermometers / , pressure gauges / , safety valves , partition crossing ,

- Restrictors: ,

- Filters / , heat meters / , strainers / (you can select defined components from “miscellaneous component” catalogues or just specify pressure drop in kPa or zeta / Kv value).