Non-moving-parts water pump

Non-moving-parts water pump
This is an easy, cheap, non-moving parts, DIY water pump.
Since it has no moving parts, it can hardly break down.
It is based on the air-lift effect.
It is a very old system, I just found a cheap and easy way to build it with a T junction.
No glue, no welding required.
I use it in hydroponic projects and water fountains.
Can also be used for irrigation, with a bicycle pump fitted with a non return valve.
All parts I use are aquarium parts, and can be found in aquarium or pet shops.
You can also use a compressor for a higher flow.

List of parts;
a 10mm T junction
an aquarium air pump (the stronger PSi you can buy, the better)
an air tube for the aquarium pump 4mm
a 10 mm tube

When i say 10mm T junction , it is the inner measurement of the tube.
A regular T from Hazelock 1/2" can be used, as Hazelock gives the outside measurements.
I use the inner measures, because i fit my tube inside the T junction.
See later why.
 
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Step 1Slip the air hose into the T

Slip the air hose into the T
Slip the 4mm air hose into the10mm T junction.
To do that, the easy way is to start inserting the air hose into the shorter end of the T.
Then use a pencil (but the blunt side) to help push it trough.
This is the toughest part of the project.
Then pull the air hose all the way, till you leave about 1 inch or 30mm sticking out of the
short side of the T.

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45 comments
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Sep 11, 2011. 5:44 PMniner14xs says:
I have been using this principle for about 15 years with my hydroponic system. The system is reservoir-drip. The water is pumped up to the plant trays and flows back to the reservoir. The lift is over two feet. The pump consists of a 1/2 in hose for the water and the aquarium air pump is 1/4 in. The air hose is inserted into the water hose about 4 in, they are dropped into the reservoir, the air pump is turned on and I slide the air hose in or out until I get the flow required. The two are locked in place with a pin. Since both hoses are vinyl, it is easy to penetrate the pair.
I like the arrangement with the T tube and plan to replace on of my 5 pumps with it just to try it out as I am uncertain of how to get the proper 1/4 in hose properly inserted.
Nov 9, 2008. 10:09 AMwiley coyote says:
Great instructable. It was one of the first I saw when I first started learning about hydroponics. (I actually saw this before the commercially available units as luck would have it) I would really like to to thank you for the inspiration to move water this way and to research same. It showed me that water pumps were not a necessary component, and sooo last century if you ask me. You've provided me with many hours of frustration and banging my head against the wall as well as the need to go buy tubing and such, but most of all a place to start a reasonable, reliable, cost effective, homemade unit.
Nov 10, 2008. 9:48 AMwiley coyote says:
I like the way you think and although I could purchase a system, I don't see the need. Then again, I could also invest my money for less than 5% return per annum with the off chance that the banks will close their doors and steal my money to bail out billionaires, but again I don't see the need. Personally, I also like building from junk because it stimulates my otherwise bored mind and frees me from other's design flaws which they will call "proprietary replacement parts"...I can live with my own. It also demands that I be somewhat creative with any designs since I limit myself, as much as possible, to COMMON recyclables so that I can screw up as much as I want. I actually started into hydroponics, trying to automate irrigation for my patio container garden and saw the benefits of hydroponics....much thanks to you. Each system comes with it's drawbacks of course. I love the idea of a tree, but you've got to spend money on a good enough pump to maintain any vertical height. Doesn't fit into my "balcony" budget unfortunately. This winter, I want to improve on my swarm of mosquitoes design to make it a little more viable for maintenance free operation as well as find as many uses for soda bottles as possible...just because. I also want to use air to power a small NFT system and a drip system similar to yours if I'm able. I was surprised by the volumes of water that actually be moved this way...virtually debris and algae proof. The possibilities are as limited as our motivation (and our budgets). Collaborating on a project sounds interesting. I'm a horrible team player, but the sharing of ideas is a completely different story altogether. This is a very interesting field with much room for improvement....indeed!
Aug 19, 2011. 11:41 AMKevinAlien26 says:
Haha well if you live in America banks don't close and run with your money. The amount of money you had in that bank would transfer to another. I believe thus problem was fixed around the time of the first stock market crash.
May 24, 2011. 5:56 PMpilotguy251 says:
quick question what kind of air pump single or double output
Mar 14, 2011. 12:16 AMjyrrasdagger says:
actually theres is enough information to know how to get this to work the air hose is the yellow one and the green one is the water and the on without a hose is were the water will go because when the air blows through it it will create a vacum type deal so the air pressure will be less in that tube making the water pressure greater and so the water will travel up the green tube and when the air hits it it will get pushed out the other side and thats how this would work just have to know how certain things work. I learned about this in JRHS when my teacher put a tube into a box of cereal and put a vacuum the type that can blow air and had it blow air across the top of the tube and the cereal came up the tube and went flying everywhere.
Mar 7, 2011. 6:07 PMSankar Ram says:
Hei author, can u avoid blowing to a " soda can" and "taking a shower " and tell exactly where to put air, water and where to get the water out?? A T has 3 holes rite. So what do we have in these 3 holes?

Sorry if I sound little rude.I have been reading the comments and only these things are popping up.
Jan 16, 2008. 1:18 PMlwltcl says:
Instructions to viag, not enough information.
Jul 10, 2010. 9:36 AMsilvestrepaivaf says:
do you know the flow of the pump(Litter/minute) ?
May 20, 2010. 11:29 PMAzurial says:
I have to admit, while i understood it completly, the instructions could have been elaborated on.
Apr 20, 2009. 3:57 PMbwpatton1 says:
Ha, Ha About a week ago I thought this concept might work and I tried it in about an inch of water and water sputtered out. Wow I forgot about this instructable
Apr 10, 2009. 3:22 PMBen The Builder says:
Maybe it's just me but I think the moving parts in the air pump count for the moving parts, and if you want a non moving parts you might be able to do it with siphons, but there's not a whole lot of timing, you may be able to use a solenoid valve for that
Mar 24, 2009. 7:17 PMjunits15 says:
does this deliver a steady stream of water?
Mar 25, 2009. 5:33 PMjunits15 says:
hmm i dont think that a gurgle will work, but it still a brilliantly simple and effective idea
Feb 15, 2009. 5:51 PMhg341 says:
you have moveing partsbut i like it
Feb 16, 2009. 5:02 PMhg341 says:
haha i didnt read all of them sry :
Feb 4, 2009. 3:48 PMchrisnotap says:
Can you tell me how high this would lift water in a hose that dia. (the green one) I 've been looking for a cheap way to lift water about 15 feet with a wind powered air pump.
Nov 15, 2008. 10:24 AMchisham says:
Hey, thanks for the tips. I will let you know how it goes. I should have some beautiful blue cheese!!!!!
Nov 20, 2008. 1:02 PMchisham says:
Yeah Ive done the culinary school and worked in the field for a whille. But im planning to open my own little kitchen one day. but gotta hustle this dank in order to make it happen. no bank in their right mind would ever give a loan!
Nov 19, 2008. 10:44 PMchisham says:
blue cheese is a strain of kush weed. its a hybrid between blueberry and big buhda cheese. not the edible kind unless u bake with cannabis. i take it u are a chef?
Oct 31, 2008. 8:48 AMtabletopphoto says:
The connector at the bottom of the hose really isn't necessary. I don't have a t for my intake and is working just fine. How many gallons is your air pump rated for? I'm using a 10 gallon at the moment, but I think that is too small (but will do for now) and would like a higher flow rate. Plus a larger pump would deliver water with a higher o2 concentration for the roots and will help the plants grow faster in the deep water culture. Just to clarify on the author's instructions, the depth of the reservoir, how full the reservoir is (water pressure), and the output of the air pump all contribute to flow rate of this kind of pump.
Nov 4, 2007. 6:09 AMMojo_JoJo says:
This is great, I used this idea to make a pump to make a water filter for my fish tank. The drinking straws from which I made the pump sit discreetly at the corner of the tank and are hardly noticable, besides the fish tank already has an air pump. The water from the pump drips onto a small container with sand to form the filter element.
Dec 10, 2006. 4:38 AMPixlGnome says:
Just so you guys know, its called a <a href=http://en.wikipedia.org/wiki/Venturi> Venturi. </a> Read up its a great article. This is a nice use of it. Helps to Isolate Water Volitile Mechanics from the water source. Understanding the principle will also help to maximize the effect therein.
Jun 5, 2007. 6:06 AMtheadamlevy says:
if you want to make a link you have to put "quotations" around the link it self after the = sign.
Oct 5, 2007. 4:19 AMdogbeardbirdbeer says:
nice tip, i didn't know that...thx.
Dec 8, 2006. 12:18 AMcompatta says:
can you possibly attach a small diagram of the flow of water and air? i am having a hard time visualising the concept of it (i'm trying to build something bigger)
Dec 7, 2006. 2:47 PM0.775volts says:
this is a creative solution to a problem, but it does involve moving parts.
Dec 8, 2006. 12:14 AMLasVegas says:
Pneumatic Unit For Fluid Dispersal or "PUFFD, the magic Dragon!" :)
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