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Technical Specs


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What Is NozzlePRO?


NozzlePRO is a standalone solution that enables users to quickly and easily perform finite element analysis (FEA) of individual pressure vessel and piping components without extensive knowledge of FEA modeling, analysis techniques or theory.

With capabilities designed to automate FEA validation and ASME code compliance reporting on pressure vessel and nozzle models, NozzlePRO is an efficient and accurate Design By Analysis (DBA) solution for pressure equipment designs.


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components analyzed with NozzlePRO


What does NozzlePRO include?

NozzlePRO Software Capabilities


NozzlePRO is designed to quickly and easily evaluate nozzles, saddles, pipe shoes and clips on a variety of head types, including spherical, elliptical, ASME, dished, cylindrical and conical. Within minutes you’ll be able to generate the following:

  • Nozzles through Blind Flanges in Axisymmetric and Brick Models

  • Double Bed Supports

  • An Axisymmetric Horizontal Vessel with Saddles

  • Steady State and Transient Heat Transfer for Axisymmetric 2D Elements

  • Head Thickness Contours

  • Blind or Matching Flange End Conditions for Axisymmetric or Brick Models

  • Radiused Welds

  • Overturning Moments on Skirts (Brick Models)

  • Internal Ring Loads

  • Integral and Non-Integral Repads

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base shell geometries


nozzle attachment geometries


Features in NozzlePRO


PRG’s standalone FEA solution aims to support easy and accurate Design By Analysis functionalities, including:

Programs in NozzlePRO


Along with a variety of features, NozzlePRO utilizes several programs to provide the ultimate FEA solution for pressure equipment designs. A few include:

  • The Saddle Wizard is a step-by-step interactive modeler that allows the user to design their horizontal vessel and saddle for any loading conditions.

  • The Pipe Shoe Wizard creates an FEA model of a pipe shoe on a cylinder to calculate local stress.

  • The Drawing Tools allow the user to add gussets, rings, clips and other attachments to an existing model.

  • Vessel Link allows the user to import models of any file type from DesignCalcs, Finglow, Codeware Compress and other Pressure Vessel design software to perform FEA.

  • FE107 replaces WRC 107 as a calculation tool that can be applied when WRC 107 or WRC 297 calculations or assumptions are limited. ASME Section VIII Div 2 allowables are printed along with flexibilities and allowable loads for forces, moments, and pressure.

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analysis output for NozzlePRO

Additional Programs



Program Summary

High Frequency

Provides AIV calculation predictions of pressure levels from the surface of the vessel. This program is mainly used to:

  • Determine virtually any number of natural frequencies and their respective shell mode shapes

  • Perform high frequency vibration tests to confirm surface integration and prediction of damaging SPL levels

  • Generate the predicted SPL spectrum by using methods in IEC 60534-8-3 for gas flows

  • Scale stresses in high frequency modes to match defined spectrum responses and predict expected cycle lives
Flaw Detection

Predicts crack growth for given stress states in components to know when the crack will reach half wall and/or thru wall for leaks. This is a quick calculation based on observed crack growth in tested low carbon steel components.

Nonlinear Analysis

Computes burst pressures, sustained stress indices, twice elastic slope load levels b, and a variety of load and unload conditions.

Degree of Conservatism

This tool aids in determining the degree of conservatism on models.


Calculates SIFs and k-factors for standard B31 branch connection geometries.


Along with performing FEA of contoured tees per user input, B16.9, or EN10253, this program mainly:

  • Defines EN10253 types A and B tees

  • Determinees thickness profiles

  • Constructs appropriate finite element models

  • Automatically generates elastic models to produce SIFs and k-factors, along with nonlinear calculations (with or without pressure) for SSIs and loads thru the branch or run

  • Defines local thin tees, the crotch radius, and/or the thickness profile around the branch to run penetration line


When to Use NozzlePRO

NozzlePRO accounts for thermal, weight, operating, occasional, pressure, wind and earthquake loads so that compliance requirement needs in the O&G, Chemical, Pharma, and many other industries can be easily determined and met.

With any DBA program, NozzlePRO is highly configurable and can be tailored to fit almost any need. Want to learn more? Schedule a discovery call with us today.

  • When there are multiple thermal or operating loads acting on a nozzle.

  • When WRC limits, proper boundary conditions and weld models should be accurately addressed.

  • When the nozzle pad is reinforced and WRC 107 or 297 is considered for use.

  • When there are loads acting on a nozzle and pipe simultaneously.

  • When pad-reinforced lugs, clips, or other support are placed on the knuckle radius of a dished head and WRT 107 methods are fraught with potential errors.

  • When seismic horizontal loads on vessel clips or box supports are to be evaluated.

  • When the analyst needs to run various model types, comparing results to determine the stability and accuracy of the solution.

  • When there are overturning moments on skirts.

  • When there are different thermal expansion coefficients or temperatures between the header and branch.

  • When horizontal vessels are saddle supported, with or without wear plates, as well as tapered saddles with many design options.

  • When evaluating the effects of axial or transverse loads due to internal sloshing, wind loads, seismic loads, or general external loads and when the Zick method does not consider either axial or transverse loads.

  • When designing pipe shoes for self-weight, liquid weight and axial loads
  • & many more


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