Valve Curve Data Fields

This table lists all the data fields for a Valve Curve. Some of them can be viewed and edited on the Valve Curve Grid View of the Links Grid.

There are a number of built in curves displayed in the Valve Curve Grid View. Fields cannot be edited for built in curves.

Once a User Defined curve has been added to the Valve Curve Grid View, fields can be viewed and edited on the Valve Curve Page, which also displays a graph of valve characteristics.

Further information, including units details, about all the Network Object fields stored in the Master Database can be found in the data fields topics listed in the Network Data Fields topic.

Valve Curve Data

Database Table Name: wn_valve_curve

Field Name	Help Text	Flag	Grid	Property Page	Size	Precision	Units	Database Field	Data Type	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
Notes	You can keep freeform notes about any object in your network. The notes field can be up to 64,000 characters in size, or about 10 pages of printed text.	NO	YES	NO		0		notes	Memo
Loss Coefficients	Table of values describing the curve. The table should be filled in from manufacturers' information where possible. Opening Percentage Opening of the valve Loss Coefficient Loss coefficient value (from manufacturers information where possible) Flow Factor Flow Factor (from manufacturers' information where possible) Database Table Name: wn_valve_loss_coefficients Show Columns Help Text Size, Type and Units Database Names Error Limits Position in Data Structure Field Name Help Text Flag Size Units Database Table Database Field Type Default Error Lower Limit Error Upper Limit Warning Lower Limit Warning Upper Limit 1 Opening   YES   WN_OPEN wn_valve_loss_coefficients opening     0 100     2 Loss Coefficient   NO     wn_valve_loss_coefficients loss_coeff	NO	YES	NO		0		curve	Array
Curve ID	Name of curve (limited to 30 characters)	YES	YES	NO	30			curve_id	Text
Curve Type	Either "Builtin" or "User Defined" Database Value Description 0 Builtin 1 User Defined	NO	YES	NO				user_defined	Boolean	1
Description	Optional text to be entered by user	YES	YES	NO	80			description	Text