Float Valve Data Fields

From Node ID

Name of the From Node for this pipe. You can select the name from the dropdown list of existing nodes, or type the name of a node you have yet to add to the model.

From and To represent the typical direction of flow for the pipe. Flow will not always be in this direction.

YES

YES

1

30

0

us_node_id

Text

To Node ID

Name of the To Node for this pipe.

From and To represent the typical direction of flow for the pipe. Flow will not always be in this direction.

YES

YES

1

30

0

ds_node_id

Text

Suffix

A suffix added by InfoWorks to ensure that all link Ids are unique

YES

YES

NO

1

0

link_suffix

Text

Area Code

The Area Code parameter is used for closer spatial modelling of demand - each node is allocated to an area and demand can then be factored by area.

The factor is set using the Demand Scaling Editor.

YES

YES

1

30

0

area

Text

Asset ID

For reference only. Designed as a reference to an asset database, but could be used for anything.

YES

YES

1

30

0

asset_id

Text

Local Loss Coefficient

Local Headloss Coefficient used by the Darcy Weisbach roughness formula

YES

YES

1

4

local_loss

0

10000000000

Length

The length of the pipe.

YES

YES

1

2

L

length

0.1

99000

Diameter

Internal diameter of the pipe

YES

YES

1

1

PS

diameter

10

20000

Friction Type

The formula used for roughness calculations. Can be Darcy Weisbach, Hazen Williams, or Colebrook White. See Pipe Calculations for more information.

YES

YES

1

2

1

roughness_type

Text

CW - k

The value for the friction coefficient appropriate to the chosen roughness type. Follow the links above for more details

YES

YES

1

6

WN_K

k

0.001

200

DW - f

The value for the friction coefficient appropriate to the chosen roughness type. Follow the links above for more details

YES

YES

1

6

darcy_weissbach

0.002

0.09

HW - c

The value for the friction coefficient appropriate to the chosen roughness type. Follow the links above for more details

YES

YES

1

1

hazen_williams

20

5000

50

Material

Link material. For reference only.

YES

YES

1

10

0

material

Text

Year

Year of installation. For reference only.

YES

YES

1

0

year

Integer

WQ Bulk Coefficient

The bulk coefficient, kb, is a reaction rate parameter used to calculate the change in concentration of a substance as it reacts with material in the bulk flow. The bulk coefficient has a positive value if the concentration of the substance grows over time, and a negative value if the concentration decays over time.

Please Note

Source dependent bulk coefficient values may be specified at individual nodes which may override or scale the pipe Bulk Coefficient value when calculating reaction rates for water that entered the system at the node.

YES

YES

1

2

bulk_coeff

-0.5

-10

10

WQ Wall Coefficient

The wall coefficient, kw, is a reaction rate parameter used to calculate the change in concentration of a substance as it reacts with material along the pipe walls. The wall coefficient has a positive value if the concentration of the substance grows in time, and a negative value if the concentration decays in time.

YES

YES

1

2

wall_coeff

-0.3

-10

10

Criticality

The criticality grade of the link. This provides an indication of the significance of the effect on the network if the link fails.

This field may be updated from a Critical Link Analysis simulation.

YES

YES

1

0

criticality

Integer

Criticality Count

Number of items (Nodes, Properties, Customer Points or Connections) assessed as critical in the event of link failure.

This field may be updated from a Critical Link Analysis simulation.

YES

YES

1

0

criticality_count

Integer

Wave Celerity

Velocity of propagation of pressure waves caused by sudden increase or decrease in flow rate.

See Transients Advisor for more details.

YES

YES

1

V

wave_celerity

1400

Pressure Rating

Maximum design working pressure of link

YES

YES

1

WN_P

pressure_rating

System Type

For information. Type in a system type or select an option from the dropdown list:

YES

YES

1

40

0

system_type

Text

Isolation Area

Area identifier used to identify groups of objects to be closed when carrying out a Critical Link Analysis.

YES

YES

1

30

0

isolation_area

Text

Regulation Type

Either continuous or on/off

YES

YES

2

0

regulation_type

Boolean

Regulating Range

The range of reservoir depth for which the float valve is in operation. Usually about 0.5 metres.

YES

YES

2

2

Y

regulating_range

-50

50

Inlet Level

The inlet position (m AD)

YES

YES

2

2

Z

inlet_level

Double

-999

9999

Backfeed Pipe

Checked if there is a backfeed pipe

YES

YES

2

0

backfeed

Boolean

Control Depth

The control depth is the height above the reservoir bottom at which the valve is fully closed. The regulating range applies from that point downwards

YES

YES

2

2

Y

control_depth

Double

0

50

Valve Diameter

Diameter of the valve when fully open

YES

YES

3

0

PS

valve_diameter

10

20000

Loss Coeff. (Open)

Local headloss coefficient when the valve is open. Minimum value 0.01

YES

YES

3

4

loss_when_open

0

10000

Valve Curve

Reference to built in curve, or user defined curve.

Please Note

Gate valves may be used as isolation valves (on/off control). However, it is recommended that in general gate valves are not used as control valves.

YES

YES

3

30

0

construction_type

Text

DefaultFLV

Inlet Position

This field is obsolete and is not displayed in the interface. A value is now set in the Inlet Level field.

YES

YES

NO

0

inlet_position

Boolean

Bends

This field defines the geometry of the link. The underlying data consists of a series of (x,y) pairs defining the vertices of the link. Each link is made up of a series of straight lines between the defined (x,y) points.

This data is not displayed on the grid or property sheet.

NO

YES

NO

0

XY

bends

Array

InfoNet Unique ID

The InfoNet Unique ID and InfoNet Network ID are unique identifiers associated with the corresponding object and network in an InfoAsset database. When importing from InfoAsset, these identifiers can be copied from the InfoAsset database in order to maintain links between the two networks.

YES

YES

NO

0

asset_uid

GUID

InfoNet Network ID

See InfoNet Unique ID

NO

YES

NO

0

asset_network_uid

GUID

Live Data Point ID

Name of the associated Live Data Point

YES

YES

5

100

0

live_data_point_id

Text

PoW Unit Cost (from - to)

Cost per cubic metre, in user defined currency units, of transferring water between the From Node and To Node.

Prices can be negative to allow for exports or bulk water sale.

YES

YES

5

2

WN_VCOST

usds_pow_cost

PoW Category (from - to)

The category into which this cost falls, for flow between the From Node and To Node.

YES

YES

5

16

0

usds_pow_cat

Text

PoW Unit Cost (to - from)

Cost per cubic metre, in user defined currency units, of transferring water between the To Node and From Node.

Prices can be negative to allow for exports or bulk water sale.

YES

YES

5

2

WN_VCOST

dsus_pow_cost

PoW Category (to - from)

The category into which this cost falls, for flow between the To Node and From Node.

YES

YES

5

16

0

dsus_pow_cat

Text

Pipe Status

You can set a time-varying profile for the pipe closed state in the grid. See Closed Pipes for more information

The data in this grid is only used if the Pipe Closed checkbox is un-checked.

Database Table Name: wn_ctl_pipe_status

YES

YES

6

status

Array

Pipe Closed

The pipe is permanently closed if the box is checked

YES

YES

6

0

pipe_closed

Boolean

Repeat Profile

Check the Repeat Profile box to repeat a profile (from 00:00 for the selected Repeat Period) for the duration of the simulation.

IMPORTANT

When using the Repeat Profile option; if the defined profile spans over the selected Repeat Period, the profile will not be repeated.

YES

YES

6

0

repeat_status

Boolean

1

Repeat Period

Profile period which will be repeated throughout simulation, if the Repeat Profile box is checked.

YES

YES

6

0

repeat_status_period

Integer

0

Initially Open

Checked if the valve is open at start of simulation

YES

YES

7

0

initially_open

Boolean

The maximum value for the corrosion layer shear strength on the pipe wall.

The maximum value for which the hydraulic shear strength will result in material being eroded from the pipe wall.

See Water Quality - Turbidity Analysis for further information.

The initial value for the corrosion layer shear strength on the pipe wall.

The hydraulic shear strength must rise above this initial value to begin the erosion of material from the pipe wall.

See Water Quality - Turbidity Analysis for further information.

Parameter used to calculate the quantity of material eroded from the pipe wall when the hydraulic shear stress exceeds the corrosion layer shear strength; the excess shear.

See Water Quality - Turbidity Analysis for further information.

The power to which the ratio of excess shear to maximum shear strength is raised when calculating the quantity of material released from the pipe wall.

A value of zero will be interpreted as meaning the erosion is independent of the excess shear.

See Water Quality - Turbidity Analysis for further information.

Parameter used to calculate the increase in turbidity as a result of material eroded from the pipe wall.

See Water Quality - Turbidity Analysis for further information.

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

10

0

notes

Memo

From Node ID

Name of the From Node for this pipe. You can select the name from the dropdown list of existing nodes, or type the name of a node you have yet to add to the model.

From and To represent the typical direction of flow for the pipe. Flow will not always be in this direction.

YES

YES

1

30

0

us_node_id

Text

To Node ID

Name of the To Node for this pipe.

From and To represent the typical direction of flow for the pipe. Flow will not always be in this direction.

YES

YES

1

30

0

ds_node_id

Text

Suffix

A suffix added by InfoWorks to ensure that all link Ids are unique

YES

YES

NO

1

0

link_suffix

Text

Asset ID

For reference only. Designed as a reference to an asset database, but could be used for anything.

YES

YES

1

30

asset_id

Text

PoW

Read only field that indicates if Price of Water data has been entered on the property sheet

NO

YES

NO

0

pow_selected

Boolean