GoFlow supports all of the KYPipe devices. Here is a summary of the key GoFlow devices. GoFlow node elements include junctions, reservoirs, pumps, sprinklers, rack sprinklers, loss elements, loss elements defined by manufacturer data from a library, variable pressure supplies, check valves, valves, intermediate nodes, and user-defined devices.
Junction - A connection of one (dead end junction) or more pipe links. A junction may be placed at a high or low point in a pipeline to compute results for this location.
Reservoir - A connection of one or more pipe links to a constant level reservoir. During a simulation, the reservoir level remains constant unless data is provided to change its value for a particular simulation or at a specified time.
Variable Pressure Supply - A connection of one or more pipe links to a supply where the supply pressure depends on the supply flow and is determined by using pressure-flow data (either 1) static pressure, residual pressure and flow, or 2) multiple pressure-flow data points). This device is ideal for modeling a connection to a distribution system such as a supply to a subdivision.
Sprinkler (Pressure Dependent Outflow) - A connection of one or more pipe links to a point where flow is discharged through an opening (orifice) into the atmosphere (or a region of known pressure) based on the pressure in the distribution system. The characteristics of a connecting pipe may be defined (length, diameter, elevation change). This device can also be used to model a leak or a pressure sensitive demand.
Pump(s) - A connection of one or more pipe links to a pump. The pumps characteristics may be defined by constant power, a rated condition, head-flow data, or a pump file which includes data for all zones of operation. Multiple pumps (parallel or series) may also be modeled using the pump element.
Loss Element - An element identical to a pump except instead of a head gain, a head loss occurs across this device.
Library (BFP-Back Flow Preventer) - A special loss element for which a head flow data Library is provided based on manufacturer, model, and size.
Active Valve - A valve for which the open ratio (stem position) may be specified and varied. The Cv (valve coefficient) ratio as a function of stem position is incorporated into the program for a number of standard valves (ball, butterfly, globe, gate, etc.). Users can provide data for other valve types.
Blowoff/Nozzle - This element models a hydrant and section of piping which discharges through an orifice to the atmosphere. It can be used to model the effect of opening a dead end blowoff.
*Check Valve - Allows flow only in the specified direction. If conditions exist for flow reversal, the valve closes and the line carries no flow. Note: the directional arrow should be in the direction of flow.
*On/Off Valve - A cut-off or isolation valve which can be closed to prevent flow in the pipeline..
* These are intermediate Nodes which do not add to model overhead.
