GIS-IDs: List of associated IDs on the GIS/data-source side.
Hyperlinks: Associate one or more web link, photo, word processing document, or other file with this element.
Flow (Typical): This value is 0 should the valve be initially closed.
Pressure (Threshold): The pressure difference between upstream and downstream side to (re)open the (closed) valve. If 0 entered, the valve (re)opens when the upstream pressure exceeds the downstream pressure.
Closure Time: Time to close the valve, from the fully open position, after reverse flow is sensed. This establishes the rate of closure in case the valve's opening is partial.
Open Time: Time to open the valve, from the fully closed position, after specified pressure difference is exceeded. This establishes the rate of opening in case the valve's closure is partial.
Allow Disruption of Operation?: Determines whether an operation (opening or closing) can be terminated prematurely due to a signal to reverse.
Located At Wye?: Specifies whether the check valve is simulated as a simple check valve in a run of pipe, or if it is simulated as a wye connection.
Flow Direction: Choices: Towards Wye, Away from Wye
Elevation: Elevation at centroid of junctions, valves, and pumps; the ground elevation at tanks; the hydraulic grade at reservoirs.
Concentration (Initial): Specify the initial concentration for the global concentration at the selected element.
Age (Initial): Specify the initial age of the fluid at the selected element.
Installation Year: Specify the install year of the element. It does not affect the calculations.
Trace (Initial): Specify the initial trace amount at the current location.
Zone: Specify the zone for the element.
Flow: Total flow through the check valve.
Flow (Absolute): Magnitude of flow through the selected check valve.
Pressure: Calculated pressure at the check valve.
Hydraulic Grade: Calculated hydraulic grade at the check valve.
Age (Calculated): Age at selected element for current time step.
Trace (Calculated): Trace at selected element for current time step.
Concentration (Calculated): Concentration at selected element for current time step.
Has Calculation Messages Now?: If true then the current element has associated calculation warning messages for the current time step.
Is Closed?: True if the current element is closed during the current time step.
Is Open?: Set to true if open during the current time step.
Is Initially Closed?: If true, the initial condition for the control element is "Closed" or "Off."
Controlled?: Is true if a control action in the current control set references the selected element.
Cannot Deliver Flow or Head?: If true then the cannot deliver head or cannot deliver flow warning was generated for the element for the current time step.
Head (Maximum, Transient): Maximum head at node over the course of the transient simulation.
Head (Minimum, Transient): Minimum head at node over the course of the transient simulation.
Pressure (Maximum, Transient): Maximum pressure at node over the course of the transient simulation.
Pressure (Minimum, Transient): Minimum pressure at node over the course of the transient simulation.
Air Volume (Maximum, Transient): Maximum air volume at node over the course of the transient simulation. Not applicable to Reservoirs and Rating curves.
Vapor Volume (Maximum, Transient): Maximum vapor volume at node over the course of the transient simulation. Not applicable to Reservoirs and Rating curves.
