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Variable Flow Water System Design

Upcoming Courses 
Key Areas
Course Content
Learning Outcomes
Who Should Attend
Course Timings
Course Fees
In-House Training

A full overview and agenda, need to know information, and booking instructions can be found on the individual upcoming course pages. Click on a course below to view.

Upcoming Courses 

Following the recent developments regarding Coronavirus (COVID-19) here in the UK, the decision has been made to cancel all classroom training until further notice. The training team are working hard to find a safe solution, by running the training online; please make sure you are opted in and check our website to receive all updates regarding training.

23 November London Find out more

Key Areas 

The key points the training discusses are:

  • Comparison with constant flow
  • Design margins
  • Load diversities
  • Terminal flow/output relationships
  • Pipe flow loading
  • Pipe layouts
  • Differential pressure regulators
  • Pump control
  • Pump energy savings

Course Content 

Session 1
  • Introduction
  • Defining a Variable Flow Water System
  • Comparison of Constant Flow to Variable Flow
  • Variable Flow System energy savings
  • Pump and System curves for Constant and Variable Flow

Session 2
  • Design Process Margins
  • Diversity of Peak Module/Terminal loads
  • Comparison of Pump duty Constant Flow to Variable Flow
  • Thermal Load Diversity Factor
  • Typical Terminal water flow/output characteristics
  • Determining Peak Flow rates
  • Pipe layouts

Session 3
  • Pressure diagram
  • Distribution in a variable flow system
  • Pump Control
  • Pressure Differential Regulator
  • Bypasses

Session 4 
  • Typical Applications
  • Questions and open discussion

Learning Outcomes 

Delegates will gain an understanding to the different approaches to designing these systems to constant volume in order to achieve all the benefits possible.

Who Should Attend 

  • Heating and air conditioning engineers and those responsible for designing flow water systems
  • Technicians/draftsmen and Cadd operators

Course Timings 

Registration: 09:15
Start Time: 09:30
Latest Finish: 17:00

Course Fees 

  • Standard Rate: £335 + VAT
  • Members Rate: £285 + VAT

In-house training at your site

Training multiple staff at once provides the opportunity for your organisation to have a training package crafted to your specific needs. In-house training can help your organisation overcome challenges and fill the skills gaps in your workforce. Courses run on a minimum number of six staff*.

For an In-house quote please email the following information to

  1. Name of course
  2. Approximate number of staff
  3. Your site address  

*Minimum numbers for In-house courses outside of the UK may vary

To contact the CIBSE Training Team with a query please

Email: or call: +44 (0)20 8772 3660