Pipeng Toolbox : API 520 Relief Valve Calculators Login
Short Cuts
GO
Main ±
Beams ±
References ±
Fluid Flow ±
Fluid Properties ±
Maths ±
Materials ±
Pipelines ±
Soils ±
Subsea ±
Data ±
Units ±
Help ±
Demo

API 520 Pressure Relief Device

Calculate API 520 pipe inside diameter and internal cross section area from pipe diameter and wall thickness.

Use the Result Table option to display a table of pipe internal diameter and internal cross section area versus wall thickness for the selected pipe schedule diameter.

Reference : API 520 Sizing, Selection And Installation Of Pressure Relieving Devices (2014)

Change Module :

Related Modules :

[FREE] tools are free in basic mode with no login (no plots, tables, goal seek etc). Login or Open a free account to use the tools in plus mode (with plots, tables, goal seek etc).
[PLUS] tools are free in basic CHECK mode with Login or Open a free account (CHECK values no plots, tables, goal seek etc). Buy a Subscription to use the tools in plus mode (with plots, tables, goal seek etc).
Try plus mode using the Plus Mode Demo tools with no login.   Help Using The Pipeng Toolbox (opens in the popup workbook)

Links : ±
CALCULATOR : API 520 Pipe Cross Section Area [FREE]   ±

Calculate API 520 internal area of a circular pipe or duct from inside diameter.

Select the pipe schedule, diameter and wall thickness, or use the user defined inside diameter option. Use the Result Table option to display a table of pipe diameter and cross section area versus wall thickness for the selected pipe diameter.

Tool Input

  • schdtype : Schedule Type
  • diamtype : Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness

Tool Output

  • AXi : Pipe Internal Contents Cross Section Area
  • AXo : Pipe External Displaced Cross Section Area
  • AXw : Pipe Wall Cross Section Area
  • ID : Nominal Inside Diameter
  • OD : Nominal Outside Diameter
  • OD/tn : Diameter Over Wall Thickness Ratio
  • tn : Nominal Wall Thickness
CALCULATOR : API 520 Pipe Internal Diameter [FREE]   ±

Calculate API 520 pipe schedule inside diameter from diameter and wall thickness.

Select the pipe schedule (NPS or ISO etc), pipe diameter and wall thickness, or use the user defined option. Use the Result Table option to display the pipe schedule for the selected diameter.

Tool Input

  • schdtype : Line Pipe Schedule Type
  • diamtype : Line Pipe Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness

Tool Output

  • ID : Nominal Inside Diameter
  • OD : Nominal Outside Diameter
  • OD/tn : Diameter Over Wall Thickness Ratio
  • tn : Nominal Wall Thickness
pipeng.com 2025 (932 μs : 6 ms : 0.733 MB) Pengu CMS ©