Pipe Flow & Pressure

Calculate water pipe flow, pressure drop, pipe sizing and system head with one practical engineering app.

Pipe Flow & Pressure is a simple engineering tool for water-pipe hydraulic calculations. It uses the Darcy–Weisbach method for friction losses and includes fittings losses, pipe sizing and system head calculations.

Designed for engineers, engineering students, technicians and anyone working with water distribution systems, the app provides quick estimates for preliminary design, checking and everyday engineering tasks.

🔧 Key Features

🔹 Pressure Drop Calculator

Calculate pressure losses in water pipes based on:

• Pipe material and pipe size

• Water flow rate

• Pipe length

• Water temperature

• Friction losses

• Fittings losses

Multiple pipe sections can be combined to calculate the total pressure loss of a pipeline.

🔹 Pipe Sizing

Select a suitable pipe size based on a maximum permitted water velocity.

The calculator shows:

• Recommended pipe size

• Internal pipe diameter

• Actual water velocity

• Alternative pipe sizes

🔹 System Head & Pump Duty Point

Estimate the required system head by combining:

• Pipe friction losses

• Fittings losses

• Elevation / static head

• Required outlet pressure

The result provides a practical pump duty point, such as flow rate and required pressure.

🔹 Fittings Losses

Estimate additional pressure losses from common fittings using loss coefficients (K), including:

• 90° and 45° elbows

• Tees

• Gate and ball valves

• Check valves

• Reducers and expanders

• Flexible hoses

🔹 Water Flow Calculations

The app is designed specifically for water systems and uses water properties that vary with temperature.

The Darcy–Weisbach method is used for pipe friction calculations, with appropriate treatment of laminar and turbulent flow.

🔹 Pipe Database

Includes common pipe materials and dimensions based on relevant European (EN) standards, including:

• Steel

• Copper

• PVC

• PP-R

• PEX

• PEX-AL-PEX

• HDPE

The database contains a selected range of commonly used pipe sizes and series for practical hydraulic calculations.

🔹 Engineering Library

Learn the fundamentals behind the calculations, including:

• Water flow basics

• Darcy–Weisbach equation

• Reynolds number

• Hazen–Williams equation

• Hagen–Poiseuille equation

• Pipe materials

• Typical engineering values

• Typical pressure levels

👥 Who Is It For?

• Mechanical, civil and electrical engineers

• Engineering students

• HVAC and plumbing professionals

• Technicians and installers

• Professionals working with water distribution systems

📐 Practical Engineering Tool

Pipe Flow & Pressure is intended as a supplementary engineering tool for preliminary design, checking and everyday calculations.

Pipe dimensions and specifications should always be verified against the actual manufacturer's data and applicable standards before final design or installation.

Download Pipe Flow & Pressure for quick and practical water-pipe hydraulic calculations wherever you need them.

(App Icon is made by Candy Design from www.flaticon.com).