Regulator & Station Piping Sizing

Sizing of regulator is performed using Universal Gas Equation:
1. For Subsonic Flow
PTLB Regulators 2.1 Intro Image.png

𝑄 = Gas Flowrate,[scf/h]
𝐺𝑓 = Gas Specific Gravity
𝑇 = Absolute Temperature,[°R]
𝐶𝑔 = Gas Sizing Coefficient
𝐶𝑣 = Liquid Sizing Coefficient
𝐶1 = PTLB Regulators 2.1 Intro Image 2.png
𝑃1 = Gas Sizing Coefficient
∆𝑃 = 𝑃1 − 𝑃2 − Differential Pressure Across Valve
𝑃2 = Outlet Pressure, [psia]
2. For Sonic Flow equation is reduced to:
PTLB Regulators 2.1 Intro Image 3.png

Input Parameters

  1. To create a new case, click the “Add Case” button
  2. Select the Regulator & Station Piping Sizing application from the Regulators & Meters module list.
  3. Enter Case Name, Location, Date and any necessary notes.
  4. Fill out all required fields.
  5. Make sure the values you are inputting are in the correct units.
  6. 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

PLTB Reg Gas_2.1 Input Rev_090320.png
PLTB Reg Gas_2.1 Input_2 Rev_090320.png

Outputs/Reports

  1. View the results.
  2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
  3. To SAVE, fill out all required case details then click the SAVE button.
  4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
  5. To generate a REPORT, click the REPORT button.
  6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
  7. To delete a case, click the DELETE icon near the top of the widget.

  • Regulator Sizing Results
    • Cg – Gas Sizing Coefficient – Calculated
    • Cgr – Gas Sizing Coefficient – Recommended
    • Flow Conditions:
  • Upstream Results
    • ID1 – Calculated Inside Diameter
    • Minimum Required Pipe Wall Thickness
    • OD1 – Calculated Outside Diameter

PLTB Reg Gas_2.1 Output Rev_090320.png

  • Downstream Results
    • ID1 – Calculated Inside Diameter
    • Minimum Required Pipe Wall Thickness
    • OD1 – Calculated Outside Diameter

PLTB Reg Gas_2.1 Output_2 Rev_090320.png

Related Links

Pipeline HUB — User Resources

Table of Contents
Table of Pages
Table of Contents
  1. Pipeline HUB User Resources
  2. AC Mitigation PowerTool
  3. API Inspector's Toolbox
  4. Horizontal Directional Drilling PowerTool
  5. Crossings Workflow
  6. Hydrotest PowerTool
  7. Pipeline Toolbox
  8. Encroachment Manager
  9. PRCI AC Mitigation Toolbox
  10. PRCI RSTRENG
  11. RSTRENG+
  12. Ad-hoc Analysis
  13. Database Import
  14. Data Availability Dashboard
  15. ESRI Map
  16. Report Builder
  17. Crossings Workflow
  18. Hydrotest PowerTool
  19. Investigative Dig PowerTool
  20. Hydraulics PowerTool
  21. External Corrosion Direct Assessment Procedure - RSTRENG
  22. Canvas
  23. Definitions
  24. Pipe Schedule and Specifications Tables