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

API 520 Effective Nozzle Size

Calculate API 520 PRV effective nozzle diameter and cross section area from nozzle letter size.

API 520 PRV nozzle sizes are designated by nozzle letter sizes (D to T). Use the Result Table option to display a table of nozzle effective diameter and effective area versus letter size designation.

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 PRV Effective Nozzle Size [FREE]   ±

Calculate API 520 nozzle effective diameter and cross section area from letter designation (letter designation D to T).

The effective nozzle sizes are taken from API 526. The effective nozzle sizes should be used for initial sizing. The actual nozzle size should be used to verify the pressure relief valve capacity. Use the Result Table option to display a list of the standard nozzle sizes.

Tool Input

  • dotype : Nozzle Diameter Type
    • Dou : User Defined Nozzle Diameter
    • Axu : User Defined Nozzle Area

Tool Output

  • Ax : Cross Section Area
  • Do : Inside Diameter