Hello! Welcome to the wonderful world of pumps. Learn about pumps
and pump systems. You can do calculations and trouble-shoot pump problems, everything is FREE.
Need more help, check out the forum.
Wooo... and there's lots more. This web site has no affiliation with any pump manufacturer and is entirely educational in nature and intent.
Branch systems, a short review on how to deal with branches in pump systems, August 2021.
Understanding liquids in movement better.
How moving liquids compares to moving solids
There is no reason why anyone should not be able to go out and buy a pump, do the installation, and be satisfied with the results.
Why do we use head as a measurement of a pump’s capacity and not pressure? The short answer is that it is more appropriate.
We need different terms to explain the movement of liquids; to move liquids we use pressure,
for solids we use a force. The term head which is energy per unit weight of liquid displaced is used to explain how much
energy a body of liquid at elevation can provide to the inlet of a pump for example. For solids, energy is a force
times a distance with the force being applied in the same direction as the movement of the object, for example lifting
a weight up vertically.
Pressure or head
The document below is a primer on pump systems, it’s not required reading but will help
the user with pump system concepts and terminology; and also, fascinating aspects of
fluids in motion. If the Romans can do it, we can do it too, see the following document.
Understanding pump systems
The strange behavior of liquids
just day to day pumping situations. May 31, 2018
An interesting historical review
of pumps throuhout the ages. May 28, 2018
One formula for all systems, one to bind them all...There is only one formula
required to analyze any system, here is one page
that explains the formula and another page with some examples
The relationship between velocity and flow
in a liquid system.
How to select a small pump
A 2-page summary of formulas for analizing pump and liquid flow systems (total head and N.P.S.H.A.)
Pump system formulas
Download an example calculation
How friction is radically different in small pipes vs large pipes for the same velocity and length
Friction, small vs large pipes
The calculations in Excel
A solution to the Colebrook equation using Excel
can be found here
How high can you suspend water in a pipe?
The siphon, is it free energy?
I think not. Also understanding how pressure varies in a pump system.
I find the terms pressure and head often get mixed up,
here's my attempt to clarify this. Let's reveal what's behind the curtain. I'm calling this series of
3 articles "The Pump Companion"
pressure and static head
pressure or head
pressure and head as energy
These apps allow you to make calculations directly on a web page (no java applets) or on your mobile browser.
You can calculate: velocity, head from pressure, pipe friction, N.P.S.H.A, submergence requirement, specific speed, suction specific speed and
pipe dimensions. Web apps
This video is a blackboard style presentation that shows how to develop the all important flow schematic.
Pump and process part 1
Pump and process part 2
This video is a blackboard style presentation that shows how friction is calculated with formulas.
>Calculating friction with formulas
This spreadsheet allows you to do your own calculations.
Excel spreadsheet to calculate pipe friction with the Colebrook equation
Low pressure from a
how does it work?
, energy for nothing?
Video tutorials Why? Because you can get the gist of a subject in a minute when someone tells you about it.
1. Pumps and how they work. The basics: pumping from one tank to another Support document:
Head and pressure formulas and sketches
2. Determining flow and pump total head. Support document:
Pipe friction tables
3. More about pressure, head and the syphon
4. Branch systems
5. Suction or not
6. Specific gravity, head and pressure
7. Specific speed of a centrifugal pump
8. The venturi
9. Centrifugal pump performance curves part 1
10. Centrifugal pump performance curves part 2
11. System curve
12. Cavitation, what is it?
13. Minimum submersion height to avoid vortex formation
14. How to build an upside down aquarium in your dreams?
The following videos are a re-constitution of a presentation I gave in September 2014 to the Society of Piping Engineers and Designers of Calgary.
It's a basic introduction to pump systems.
15a. Pumping and piping part 1, SPED presentation, Calgary March 27, 2013
15b. Pumping and piping part 2, SPED presentation, Calgary March 27, 2013
15c. Pumping and piping part 3, SPED presentation, Calgary March 27, 2013
15d. Pumping and piping part 4, SPED presentation, Calgary March 27, 2013
15e. Pumping and piping part 5, SPED presentation, Calgary March 27, 2013
15f. Pumping and piping part 6, SPED presentation, Calgary March 27, 2013
15g. Pumping and piping part 7, SPED presentation, Calgary March 27, 2013
15h. Pumping and piping part 8, SPED presentation, Calgary March 27, 2013
16. Buying your first pump, Calgary October, 2013
|I am your host Jacques Chaurette and the author of this web site and most of everything in it.
I live in Montreal, Canada. I have nothing to do with any pump manufacturing company and am not trying to sell you anything.
Please join the Forum and ask any question you like. I can be reached at
The previous incarnation of this site was www.lightmtypump.com, yeah I know it seemed like a good idea at the time, I changed it to www.pumpfundamentals. The prior site to lightmypump.com
was called www.fluidedesign.com it was abandonned (for bizarre reasons)and morphed into this site. Unfortunately by mistake, the domain name was allowed to lapse
and someone else picked it up. Before that I had a site called www.pumpsRme.com, not very original I know, that was in 1992, everything was new then on the internet.
find a pump
If you are starting from scratch or you want to review what you know,
check this out It will help you understand how
centrifugal pumps and pump systems work.
EXPERIMENTS ON VIDEOS
Check out these cool experiments with fluids.
CENTRIFUGAL PUMP TIPS
If you're currently designing a system or checking out an existing one,
here are some ideas on what to avoid and what to look for.
An alphabetical list of pump and pump system terms that will show as well as explain the terminology.
This section is devoted to NEW ITEMS that have been added
to the site or just interesting downloads or ideas that I have come across. Updated on March 2020
See previous new items
I am back from Australia where I was working on
a pulp & paper project near Melbourne.
Australia....what a place. I will miss it.
Yeah I know these are crazy pictures but it's my life. OK, down to business,
This site has alot of information and data:
Solved problems and helpful examples
on various pumping system problems and how to solve them
formulas that you can use for pump and pump system calculations
A detailed manual
(FREE) on how to do centrifugal pumps sizing and how to solve various pumping system problems.
...and much more
, just follow through the top menu
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