Sizing of regulator is performed using Universal Gas Equation:
1. For Subsonic Flow
𝑄 = Gas Flowrate,[scf/h]
𝐺𝑓 = Gas Specific Gravity
𝑇 = Absolute Temperature,[°R]
𝐶𝑔 = Gas Sizing Coefficient
𝐶𝑣 = Liquid Sizing Coefficient
𝐶1 =
𝑃1 = Gas Sizing Coefficient
∆𝑃 = 𝑃1 − 𝑃2 − Differential Pressure Across Valve
𝑃2 = Outlet Pressure, [psia]
2. For Sonic Flow equation is reduced to:
Input Parameters
To create a new case, click the “Add Case” button
Select the Regulator & Station Piping Sizing application from the Regulators & Meters module list.
Enter Case Name, Location, Date and any necessary notes.
Fill out all required fields.
Make sure the values you are inputting are in the correct units.
Click the CALCULATE button.
Class Location
Temperature
F – Design Factor
T – Temperature Derating Factor
Gas Specific Gravity
Regulator Sizing Data
P1 – Inlet Pressure
P2 – Outlet Pressure
Q – Flow Rate
Gas Specific Gravity
Flowing Gas Temperature
C1 – Valve Recovery Coefficient
Capacity Factor (80% Recommended)
Upstream Pipe and Operational Data
P1 – Operating Pressure – Upstream
Q – Flow Rate
V – Assumed Gas Velocity
F – Design Factor
T – Temperature Derating Factor
SMYS – Specified Minimum Yield Strength
E – Longitudinal Joint Factor
Downstream Pipe Operational Data
P2 – Operating Pressure – Downstream
Q – Flow Rate
V – Assumed Gas Velocity
F – Design Factor
T – Temperature Derating Factor
SMYS – Specified Minimum Yield Strength
E – Longitudinal Joint Factor
Outputs/Reports
View the results.
If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
To SAVE, fill out all required case details then click the SAVE button.
To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
To generate a REPORT, click the REPORT button.
The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
To delete a case, click the DELETE icon near the top of the widget.