6.1.14. Four-way valve<br>

### 6.1.14. Four-way valve

4-way valves are components which stand alone in the project – they are not inserted onto pipe-runs, as are other fitting components. Connection of a valve is effected by inserting supply and return pipe-runs that link the valve with the system and which are accounted for in flow calculations. On a by-pass pipe-run there is no flow under the calculation conditions of the system, i.e. a 4-way valve is calculated for the “full flow” condition.

Button on the “Central” toolbar:

Appearance on screen (plan / schematic view):

“4-way valve” component data:

Symbol

Text field. Symbol that identifies the component unambiguously.

4-way valve ...

Selection field. Select valve type from loaded catalogue or assign the value of known Kv, zeta or pressure drop.

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.

Component status

Selection field. Select from list the current status of component: existing or under design. Affects only bill of material.