Pipe Flow Expert 8.17 — Pipe Network Analysis & Pressure Drop Software

Pipe Flow Expert is a premier engineering software application for designing and analyzing complex pipe networks. Used by over 3,000 companies and consulting engineers across 100+ countries — including names like Halliburton, Chevron, General Electric, Honeywell, Nestlé, and NASA — it provides reliable, accurate results for flow rate and pressure drop calculations in piping systems of any complexity.

Version 8.17, the latest release in the version 8 series, delivers a significantly enhanced calculation engine, a brand-new Orifice component, a doubled drawing area, advanced isometric 3D selection tools, and major PDF report optimizations. Whether you are designing a water distribution network, modeling a gas transmission line, or sizing a cooling system for an industrial plant, Pipe Flow Expert provides the tools to get accurate results fast. This article covers everything you need to know: features, version 8 updates, system requirements, licensing, and a full FAQ.

Software Specifications

Software Name	Pipe Flow Expert
Current Version	8.17.2.1
Release Date	August 2023 (2026 interface updates)
Developer	Pipe Flow Software Ltd (United Kingdom)
Supported OS	Windows 10, Windows 11 (64-bit)
Max Pipes (Full)	1,000 pipes
License Type	Single-user / Network
Output Formats	PDF, EMF, PFE
Interface Language	English

Key Features

Pipe Flow Expert combines a robust calculation engine with an intuitive graphical interface, making it suitable for both seasoned piping engineers and engineering students learning fluid mechanics fundamentals.

• Pressure Drop Calculations: Uses the industry-standard Darcy-Weisbach formula and the Colebrook-White equation for friction factor to deliver highly accurate pressure drop results across pipes, fittings, valves, and components.
• Complex Network Modeling: Supports open and closed-loop pipe networks with multiple supply and discharge tanks, multiple pumps in series or parallel, and hundreds of pipes with mixed diameters and materials — all solved simultaneously.
• Liquid and Gas Flow: Handles both incompressible liquid flow and compressible isothermal gas flow using equations including the General Fundamental Flow Equation, AGA, Weymouth, Panhandle A, Panhandle B, and IGT.
• Pump Modeling and Selection: Built-in pump database with 100+ example pumps, custom pump curve entry, operating point analysis, efficiency predictions, and NPSH calculations.
• Isometric 3D Drawing: Full isometric and 2D pipe drawing with automatic symbol rotation, smart text positioning, and a drawing area that scales to very large system layouts.
• Professional PDF Reports: One-click generation of fully customizable PDF reports including system drawings, results tables, pump data sheets, and support for custom company logos.
• Extensive Databases: Over 400 fluid data points, 75+ pipe materials and schedules (1,000+ rows of pipe data), and a comprehensive fittings library with standard K-factor data.
• Calculation Verification: Includes a Results Verification Document comparing over 50 published cases against Pipe Flow Expert results, confirming calculation accuracy.

What’s New in Version 8 (2026)

Version 8 is the most significant update in the software’s history. Here is a full breakdown of every major addition.

New Orifice Component

Version 8 introduces a dedicated Orifice component covering four orifice plate types:

• Sharp Edged Orifice
• Round Edged Orifice
• Bevel Edged Orifice
• Thick Edged Orifice

Calculations work for both liquid and gas systems. For gas, the software automatically accounts for density at the orifice inlet. Orifices can be placed in straight pipes or in transition sections where upstream and downstream pipe diameters differ. Auto Sizing is also supported — specify a required flow rate or a target pressure drop, and the software calculates the correct orifice diameter.

Enhanced Calculation Engine

• Significant improvement in handling complex edge cases in large pipe networks
• Improved identification and selection of critical pipe loops when generating equations
• Enhanced convergence algorithms for difficult systems that previously required manual adjustment

Drawing Area 200% Larger

The total drawing grid is now twice the size of version 7, making it practical to lay out very large systems — municipal water distribution networks, refinery piping diagrams, or multi-building HVAC systems — without running out of canvas.

Advanced Drag and Drop

Selections can now be moved and placed onto existing parts of a model with automatic node merging. Overlapping nodes within the pasted selection are automatically removed and pipes are connected to the existing network. This dramatically speeds up building repetitive or symmetrical systems.

Decimal Places Configuration

Users can now override the default number of decimal places for each unit type (diameter, length, pressure loss, flow rate, etc.) independently for the system drawing, results sheet, and PDF report.

Vectorized Background Images

Background images now support Windows Metafile (WMF) vector format in addition to raster images. Vector backgrounds maintain full quality at any zoom level, making it practical to trace over high-resolution P&ID drawings or floor plan imports.

Isometric Selection Rectangle

Selection rectangles are now available in the 3D isometric plane, enabling much more precise multi-item selection when working in isometric view — a significant workflow improvement for large isometric layouts.

Individual Copy and Paste of Pipe Items

Fittings, components, control valves, and pumps can now be individually copied to their own clipboard and pasted onto a different pipe — even across different system tabs open simultaneously.

Group Updates for Control Valves and Pumps

Group copy now supports control valves and pumps in addition to fittings and components. A default control valve or pump can be defined once and then applied to a selected group of pipes in a single operation.

PDF File Size Optimization

Results PDF, system drawing PDF, and pump sheet PDF files are significantly smaller in version 8 due to optimized font storage. Multiple paper sizes (A4, A3, Letter, etc.) are now selectable when generating results PDF documents.

Eight New Example Systems

Eight additional example systems are included covering submerged pump modeling, ballast systems, and practical demonstrations of the new Orifice component.

Industries and Use Cases

Pipe Flow Expert is used across a wide range of industries by engineering professionals who need accurate, defensible results:

• Oil, Gas, and Petrochemical: Gas transmission pipeline design, refinery process piping, offshore platform piping, hydrocarbon transfer systems, and injection line sizing.
• Water and Wastewater: Municipal water distribution network analysis, pump station capacity verification, pressure zone modeling, and sewer rising main design.
• Power Generation: Cooling water system design, boiler feed water piping, steam distribution networks, and condenser circuit modeling.
• Pharmaceutical and Food & Beverage: Sanitary piping systems, clean-in-place (CIP) circuit design, product transfer line sizing, and utility system modeling.
• Fire Protection: Sprinkler network design with K-factor support, hydrant system analysis, and NFPA compliance verification.
• Mining and Heavy Industry: Slurry transfer pipeline design, compressed air distribution, process water systems, and hydraulic circuit modeling.
• HVAC and Building Services: Chilled water and heating hot water circuit design, domestic water services, and pressure balancing for multi-story buildings.
• Aerospace and Defense: Fuel system modeling, hydraulic circuit analysis, and fluid distribution in complex aircraft and vehicle systems.

Fluid, Pipe, and Fittings Databases

Fluid Database

Over 400 fluid data points covering water at various temperatures, industrial oils, acids, solvents, hydrocarbons, and an extended gas database including Air, Ammonia, Argon, Butane, Carbon Dioxide, Carbon Monoxide, Ethane, Hydrogen, Methane, Nitrogen, Oxygen, Propane, R134a, and more than 28 additional gases. Gas properties are calculated across an extended range of temperatures and pressures, including real gas density, compressibility factor (Z), and specific heat ratio.

Pipe Database

Over 75 pipe materials and schedules with more than 1,000 rows of pipe data, including Steel ANSI (Sch 10 through XXS), Galvanized Steel, Stainless Steel (Sch 5s through 80s), Aluminum, Copper (Tables K, L, M, X, Y), HDPE (SDR 7.3 through 32.5), PVC ANSI and AWWA, Cast Iron, and more.

Fittings and Components

A comprehensive fittings library covering elbows, tees, reducers, valves, and mechanical connectors with standard K-factor data. The version 8 Edit Grid allows Sprinkler K components to be managed and updated in bulk.

Trial Version vs. Full License

Feature	Trial Version	Full License
Maximum pipes	20 pipes	1,000 pipes
Save files	Limited	Unlimited
PDF reports	Watermarked	Full, professional
Technical support	None	12 months included
Software updates	None	12 months free updates
Example systems	40+ included	40+ included
Network licensing	Not available	Available separately
Time limit	None	Perpetual use

System Requirements

• Operating System: Windows 10 or Windows 11 (64-bit)
• RAM: 4 GB minimum, 8 GB recommended for large networks
• Disk Space: 500 MB
• Display: 1280×800 minimum resolution; 4K and 5K monitors fully supported
• Internet: Not required after activation

Licensing and Installation

Pipe Flow Expert uses an offline license activation model. After purchase, you receive a purchase token which you use to generate a unique license code for your machine. No internet connection is required at the time of activation or during use.

1. Download the installer and run it (Administrator access required).
2. Launch the software — it starts in Trial Mode (20-pipe limit).
3. Go to Help > Enter License Code and enter your license code.
4. The software is fully enabled in under 2 minutes.

Single-user and network licenses are both available. Network licenses allow installation on a server with concurrent access by multiple users across a local network.

Frequently Asked Questions

What calculation method does Pipe Flow Expert use for pressure drop?

Pipe Flow Expert uses the Darcy-Weisbach equation for pressure loss, with friction factors calculated using the Colebrook-White equation. This is the industry-standard approach accepted by engineering bodies worldwide and produces accurate results across both laminar and turbulent flow conditions, for all pipe roughness values and Reynolds numbers.

Can Pipe Flow Expert handle compressible gas flow?

Yes. Version 7 introduced full compressible isothermal gas flow support, which continues in version 8. Supported equations include the General Fundamental Flow Equation, Complete Isothermal Equation, AGA, Weymouth, Panhandle A, Panhandle B, and IGT. The software automatically adjusts gas density for pressure conditions throughout the network, calculates entry and exit velocities, Mach numbers, and compressibility factors (Z), and warns when sonic velocity conditions are approached.

How does Pipe Flow Expert compare to EPANET?

EPANET is a free, open-source tool from the US EPA, purpose-built for water distribution network simulation. Pipe Flow Expert is a commercial application with a much broader scope: it supports dozens of fluid types (oils, gases, chemicals, refrigerants), handles compressible gas networks, includes pump curve modeling, produces professional PDF reports, and covers industries far beyond water utilities. For water network work specifically, both are capable tools; for any other fluid or industry, Pipe Flow Expert is the more appropriate choice.

Can Pipe Flow Expert model pumps in series and parallel?

Yes. The software supports multiple pumps within a single network, in any combination of series and parallel configurations. Each pump can be defined by its performance curve (imported from a manufacturer’s datasheet image or entered manually), and the software calculates the actual operating point for each pump within the balanced system solution.

Is the trial version time-limited?

No. The trial version has no time limit. The only restriction is a 20-pipe maximum per system. You can use the trial indefinitely to evaluate the software on smaller test systems. The 40+ included example systems can all be loaded and solved in trial mode, giving a thorough picture of the software’s capabilities before purchase.

Can I install Pipe Flow Expert on more than one computer?

A standard single-user license activates on one computer. If you need to use the software on multiple machines — for example, moving between an office workstation and a laptop — you can transfer the license by deactivating it on one machine and activating on another. For organizations needing concurrent multi-user access, network licenses are available.

Does Pipe Flow Expert integrate with AutoCAD or other CAD software?

Pipe Flow Expert is a standalone application and does not have direct integration with AutoCAD or other CAD packages. However, it supports importing background images including the WMF vector format (new in version 8), allowing you to trace over imported P&ID drawings. System drawings can be exported as EMF vector files or included in PDF reports for use in other documentation.

What units does Pipe Flow Expert support?

The software supports both metric (SI) and imperial unit systems, and units can be mixed and configured independently. Metric options include bar, kPa, MPa, m³/h, l/s, l/min, kg/s, mm, cm, and m. Imperial options include psi, GPM, ft/s, inches, and lb/ft³, among others. Units can be configured system-wide or overridden on individual elements.

How accurate are the results?

The software includes a published Results Verification Document that compares results from over 50 independent published test cases against Pipe Flow Expert outputs. Results compare very favorably across all cases. In several instances, the software has identified errors in the published reference data that were later confirmed as printing mistakes by the original authors.

What support is included with a license?

Every license includes 12 months of technical support and free software updates. After 12 months, the software continues to work on the licensed version indefinitely — an Annual Support and Upgrade subscription is available to continue receiving new versions and priority support beyond the first year.

Summary

Pipe Flow Expert 8.17 is one of the most capable and accessible pipe network analysis tools available for professional engineers. Its combination of a trusted Darcy-Weisbach calculation engine, intuitive graphical interface, comprehensive fluid and pipe databases, and professional PDF reporting makes it a practical choice for engineering consultants, facility engineers, and project teams across oil and gas, water utilities, power generation, pharmaceutical, and building services industries.

The version 8 update adds meaningful improvements across the board — the new Orifice component alone fills a gap that previously required separate hand calculations, and the doubled drawing area removes a practical constraint for users working on large system layouts. A free trial with no time limit is available to evaluate the software before purchase. Full single-user and network licenses include 12 months of support and updates.

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