Big changes were made to the way piping systems were stored, after version 6. As a result not quite everything transfers over when importing version 6 system files into newer versions of PIPE-FLO. Here's a list of the things you might want to look out for.

Pipe Specifications
Pipe Specifications are divided into Fluid Zones and Specifications.

Altered Fluid Properties If the system contains pipelines with altered fluid properties, a Fluid Zone is created for each altered case.
NOTE: If a version 6 pipe specification has manually entered fluid properties, or if the specification references a fluid table that is not available in the 2005 format, the fluid is assumed to be a liquid. Also, the vapor pressure and critical pressure values are set to zero. You should review the fluid zones in your PIPE-FLO 2005 system and make the appropriate changes.

Altered Pipe Properties If the system contains pipelines with altered pipe properties, a Specification is created for each altered case.

Non-standard Valves Valves and fittings not found in PIPE-FLO's standard table are imported as Fixed K values.

Unconnected Pipelines Unconnected pipelines are not imported.

Undesigned Pipelines Undesigned pipelines are not imported.

Pumps Both installed and uninstalled pumps are imported. For installed pumps, a short pipeline of length 0.01 is inserted in the system upstream of the pump suction. The pump is then installed at the downstream node of this short pipeline. Uninstalled pumps are placed on the FLO-Sheet below the system drawing.

Components Both installed and uninstalled components are imported. For installed components, a short pipeline of length 0.01 is inserted in the system upstream of the component inlet. The component is then installed at the downstream node of this short pipeline. Uninstalled components are placed on the FLO-Sheet below the system drawing.

Pump Controls Pump Controls (PCs) are not supported in PIPE-FLO 2005 and they are not imported. Pumps with PCs installed are removed from the system and imported as uninstalled pumps which are placed on the FLO-Sheet below the system drawing.

Pressure Sources Pressure sources that have a nonzero level specified are imported as tanks. Pressure sources with a level of zero are imported as pressure demands.

Demands Flow demands are imported without any changes.

FCVs Flow Control Valves (FCVs) are imported. A short pipeline of length 0.01 is inserted in the system upstream of the valve inlet. The FCV is then located at the downstream node of this short pipeline.

PRVs Pressure Regulating Valves (PRVs) are imported. A short pipeline of length 0.01 is inserted in the system upstream of the valve inlet. The PRV is then located at the downstream node of this short pipeline.

BPVs Back Pressure Valves (BPVs) are imported. A short pipeline of length 0.01 is inserted in the system downstream of the valve outlet. The BPV is then located at the upstream node of this short pipeline.

Check Valves Check valve controls are not imported. In PIPE-FLO 2005, the function of this control is replaced with the Prevent Backflow feature.

Lineup Files Only the current lineup file is imported. Before importing a version 6 system, you should save it with the lineup you want imported. This lineup is then designated as the Design Case in PIPE-FLO 2005.

Closed Pipelines The status of closed pipelines is imported.

Symbols All drawing symbols are reset to the default symbols.