GB Gas LPG Pipe Sizing Calc.

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About this app

GBPipe LPG – LPG Pipe Sizing Calculator
Stop trial and error. GBPipe calculates the correct pipe size automatically.

GBPipe LPG has been developed by GB-GAS to make LPG pipe sizing faster, simpler and more accurate.

Instead of repeatedly trying different pipe sizes until one works, GBPipe automatically determines the minimum hydraulic pipe diameter required for your installation.

Whether you're working with propane supplied from cylinders, bulk tanks or LPG meter installations, GBPipe performs the calculations quickly and presents the results in a clear, practical format.

Key Features
✔ Automatic Pipe Size Selection

No more trial and error.

Simply enter your appliance gas rates, pipe lengths and fittings and GBPipe automatically calculates:

• Minimum hydraulic pipe diameter

• Recommended practical installation pipe sizes

• Pressure loss

✔ Installation Volume (IV)

Automatically calculates the Installation Volume for:

• Tightness Testing

• Purging

• Commissioning

✔ Purge Volume (PV)

Automatically calculates Purge Volume using current industry methodology.

✔ Tightness Test Leakage Rates

Automatically provides the allowable leakage limits based on the installation volume, helping engineers during commissioning and testing.

✔ Single Pipe Calculator

Verify an existing section of pipe using the traditional longhand calculation method.

Supports:

• Copper

• TracPipe

• Low Carbon Steel

• MDPE

Simply enter:

• Pipe size

• Pipe length

• Gas load

• Bends

• Elbows

• Tees

GBPipe automatically calculates:

• Equivalent Length

• Pressure Loss

• Section Pressure Drop

✔ Professional Reports

Create professional:

• Installation Schedules

• Pipe Schedules

• Material Lists

• PDF Reports

• Image Reports

Ideal for site records and design calculations.

✔ Intelligent Engineering Assistance

Designed to reduce common data-entry mistakes.

Includes:

• Heat input to gas rate conversion

• Gas rate validation

• Meter/regulator selection reminders

• Automatic recalculation

• Fast data entry

✔ Materials Supported

• Copper

• TracPipe

• Low Carbon Steel

• MDPE

✔ Optimised for Engineers

Designed by GB-GAS with experienced engineers in mind.

Fast.

Simple.

Professional.

Suitable for:

• Gas Engineers

• LPG Engineers

• Heating Engineers

• Designers

• Installers

• Training Centres

Developed by GB-GAS

GBPipe LPG forms part of the GB-GAS suite of professional gas engineering software.

For more engineering tools, publications and online training visit:

www.gb-gas.co.uk

Important

This application is intended as a professional engineering calculation aid.

Always follow current legislation, relevant standards, LPG industry guidance and appliance manufacturer's instructions where applicable.
metric copper, stainless steel, and semi rigid pipes including 6, to ,28 mm .
Updated on
Aug 3, 2026
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