Low Power Airlift Pump Explained (Pneumatic Ejector Pump aka Geyser Pump with Check Valve) 

I have been working on a hydraulic pump for six years now. I used the same check valve system as yourself. It is amazing what water lift can be achieved with absolutely no pistons or seals. It is very tough to discover that your idea was patented so long ago. It seems to go with the territory! Nice video presentation.

I was struggling long time to get my geyser pump working. Your design and movie really helped me, it works now! Thank you

Thank you so much for creating this presentation. I've been researching air lift pumps and pneumatic ejector pumps in particular, and your presentation was excellent. Very helpful Thank you again.

Hello lock8! Ok, I think I have enough knowledge to develop this pump models of various shapes to operate submerged or on the surface, added the knowledge gained in these 14 years experimenting with his idea of the siphon and will now test models with the greatest possible flow, thank you for the answers a hug, Arruda

Great pump... excellent presentation. Your innovation using the check valve solved my problem of insufficient head pressure in shallow sumps. I like your analogy comparing it to an inverted bell siphon but take exception to the term 'sucked in'. Thanks...great design.

Perfect! Thanks. Eliminating my mechanical motors.

This helped me a lot!

Nice job.

thanks so much this is the one video that explains the principle for me -

total brilliant!

thanks for posting. some late thoughts... this type of air lift pump might be capable of raising water to a head of five meters or more, if a correctly designed riser is used. one of the advantages of these pumps is the creation of relatively larger, wall-to-wall confined bubbles. confined bubbles lift all the water within the riser, until the air is able to escape. so, like other pumps, its the water in the riser above the siphon that is raised. the volume of air per 'flush' should be optimized in relation to air pump flow rate and the volume of water in the riser, above the siphon, to give a pump cycle rate of one or two per second. cheers

Hello lock8! I've done the change to your project that found the ingenious functionality and simplicity, tomorrow, 3rd I will try to eject to 30 feet if it works I'll be very happy and I'm very grateful for answering my question.Then I inform you the test results. Grateful, Arruda

Great yes I want continuous flow with two devices. Thanx

I would absolutly love to see an all clear as glass built model made.. and a colored fluid demonstration. just to see it in motion.

really well understood and explained. HAVE YOU ANY NEW INNOVATIONS you've discovered since then?

Just a thought with the leakage from your check valve there.. a small rubber O-ring around where the marble seats would help seal that and maintain the pressure in your container for a little better efficiency. Also, does the check valve need to extend out the bottom like that? I'm thinking if it's internal within the unit, you can lower the whole thing further down in the water column, meaning the air bubble's forming in higher pressure and so probably being able to push more water and/or give a higher lift. Very much like the design though.. I've been looking at airlift and un-valved geyser pumps but have been a little discouraged by the depth required. This looks like it might be the solution I've been looking for.

Thanks/samraj coimbatore India

Would Like to ask? The compressed air delivered doesn't shut down for the bell to refill does it. Looks to me that it doesn't. If that's so could it be that the air being delivered can be a stand alone cylinder with pressure in it not needing a powered compressor?

maybe you can lift more higher if you put a check valve in the water output pipe of the pump

Thank you so much for your video I learnt a lot from it... I have a small idea I don't know whether it works or not but still I want to explain ... Can you fix an impler above the suction and connect the air flow in two way T type so that the impler rotates and water will easily pump up..thank you.

One question brother. Will it give continuous water flow with air pressure or each time it will refill.then build pressure and then through water out.Is it pissible to take continuous water flow when check valve once open and close only when there is no air?

Hello lock8! Worked perfect for 30 feet, fills and empties alone may be injected air all the time without stopping it does not interfere realized that the larger the diameter of the outlet tube of the depressurized water and fill faster, ie, pumping more water as tubes thicker, I will test with mior height or will simulate height lowering of the water outlet diameter, so I can test in the same place ejetei 30 feet, but I will soon eject 200 actual feet in a deep well, something else, if you use a more powerful compressor flow increases enough, I used a portable pump to fill bike tire and ejetei about 8 liters / minute, I'll build a giant to pump some 5000 liters per hour to irrigate the crop of a friend, I will try to replace the siphon by a horizontal one-way valve to see if it even faster filling processes and emptying, I can guarantee you is that has already been using my system with the aid of electronics since February 2001 and today thanks to his idea got rid of electronics which made more functional and ecological bomb because dispença electricity, imagine a propeller attached to a compressor without using any electricity can pump water, or solar energy. I have already observed that this pump can be cosntruida of any size, bigger is better because it does not waste time with breaks to fill and EM PORTUGUES: Olá lock8 ! Funcionou perfeito para 30 pés, encheu e esvaziou sozinho, pode ficar injetando ar todo o tempo sem parar que não interfere, percebi que quanto maior o diametro do tubo de saida da agua despressuriza e enche mais rápido, ou seja, bombeia mais agua como tubos mais grossos, vou testar com mior altura ou vou simular altura diminuindo o diametro de saida da agua, assim posso testar no mesmo lugar que ejetei 30 pés, mas em breve vou ejetar 200 pés reais em um poço profundo, outra coisa, se usar um compressor mais potente a vazão aumenta bastante, eu usei uma bomba portatil de encher pneu de bike e ejetei uns 8 litros / minuto, vou construir um gigante para bombear uns 5000 litros por hora para irrigar a lavoura de um amigo, vou tentar substituir o sifão por uma valvula unidirecional horizontal para ver se fica mais rápido ainda os processos de enchimento e esvaziamento, o que posso lhe garantir é que já vinha usando meu sistema com auxilio da eletrônica desde fevereiro de 2001 e hoje graças a sua ideia me livrei da parte eletrônica que tornou a bomba mais funcional e ecologica porque dispença eletricidade, imagine uma helice acoplada a um compressor sem uso de eletricidade alguma posso bombear agua, ou com energia solar. Já constatei que essa bomba pode ser cosntruida de qualquer tamanho, quanto maior melhor porque não perde tempo com os intervalos para encher e despressurizar, sem falar que se usar compressor eletrico ligado a rede eletrica o rendimento do sistema pneumático é por volta de 3 vezes mais eficiente que o sistema de bombeamento tradicional. Mais uma vez lhe agradeço por ter tido essa ideia do sifão de ar, fantastico. QUALQUER PESSOA QUE ESTIVER PENSANDO EM FAZER ESSE PROJETO VAI FICAR IMPRESSIONADO COM O FUNCIONAMENTO, MUITO BOM. Grato, Arruda

you can add a bucket/bottle as chamber in the end as resourvior to produce consistant nonstop flow of water , if u get what i mean , outlflow needs to be in proportion that until next fill of water it slowly empties water , will need a valve to adjust rite timing

Lock8! I observed that the pump body weight has to be greater than the weight of the displaced water otherwise the same will float on the water as it exits. I already have an electronic version here working for more than 60 days, that is on the connected surface to a tank with 2000 liters and has pumped more than 40,000 liters of water this time without nehum problem, use a 40-pound compressor, ejeto 1714 liters per hour. Lock8 ! Observei que o peso do corpo da bomba tem que ser maior que o peso da agua deslocada, caso contrario a mesma irá flutuar a medida que a agua vai saindo. Eu já tenho uma versão eletrônica aqui funcionando a mais de 60 dias, essa fica na superficie conectada a um tanque com 2000 litros e já bombeou mais de 40 mil litros de agua nesse tempo sem nehum problema, uso um compressor de 40 libras, ejeto 1714 litros por hora.

Hello lock8! My system that pumps 1714 L / h at 30 feet is too large, is on the surface side of a tank with the capacity of 2000 L, direct air compressor use 40 pounds, it's all working, have not given the final finish for lack of time, but if you want to view photos including of the water coming out of the pipe can send you a photo via e-mail. 40 pounds can pump almost 120 feet, there would no longer 1714 L / h, will be less Arruda

Sorry, reviewing their response, I missed answer you, I confirm that I developed an electronic version that works perfectly and I will feed with photovoltaic solar energy soon, but I prefer to replace the electronics in your system that seems much simpler and can work with it I generate compressed air through the wind power, the good of your system is not dependent on electricity and therefore offers some other options for operation. Grateful, Arruda

What happens if your purge vessel is too small? Does the flow get interrupted? Is it possible to set this up so that it delivers a continuous flow of water?

Hello lock8! I am in Brazil, Bahia, saw his project, I enjoyed the air siphon idea, maybe improve my project with my pump can eject water at very high heights with corresponding pressure, only to have to wear an electronic circuit and sensor level inside the chamber to know the time that it is full or empty when empty, the low retention valve opens because the pressure of the water outside is larger and the chamber fills, then the chamber filled the box level sensor closes an air relief solenoid valve and connects the compressor which is currently electric network, I will do soon with solar energy, so the compressor connects, the water begins to rise with great force and volume when it becomes empty the camera sensor the low level turns off the compressor and opens the solenoid valve to depressurize the chamber, then begins another cycle. I want to remove the electronics and level sensors and see if your air siphon idea works in my pump, vc tested whether depressurizes if you have a second valve in the water riser pipe? Grateful, Arruda

Out of phase mean two seperate pump with two air supplies. Can we integrate them for large fish tank with on air device, so that when one is refilling other is throwing water or both pump in one packing. Plz do work on this.

Question for you: What is the LPM / PSI of your air pump, vs the LPM / Lift of the water? I've been looking for a good tool to lift water for my aquaponics, and was wondering about lift heights and flow rates for your pneumatic ejector air lift pump.

Great video, I'm looking to design one of these to pump 12ft up, small amount of water, but still there is an obvious gravity issue... Any tweaks you can suggest ? My first two attempts have not worked, though they did not have check valves... Thanks!

I'm interested to know if a larger pump using this design could pump water 10 meters / 10 yards up a hill with a slope of about 45º. I wanna fill a 15,000 liter / 4,000 gallon tank :)

1.my wall 45 ft water only 30 -45 only its suitable ? 2.and 1hp air compressor motor?

El sifon del diagrama es diferente al sifón de su aparato. Trabajan igual?

I'm thinking of making this for a submersible water well. Do you think it would pump sand particles through or would sand likely settle in the tank?

Given than the chamber and pipes can handle higher pressure upto several say 5 bars, will this setup still work? Specifically in shallow water?

If I wanted to build one of these to pump water over 200 feet down my well would it still work

Wouldn't the one way valve closes at 2:20 when the water fills the bottom of u syphon causing airlock and the air has nowhere to go except increasing the chamber pressure?

What aerator are you going to use on this? what is the wattage?

Greetings, what is the maximum height of these pumps?. I have a tank that's about 15' above the ground,will it pump to that height?. Great video.

hi! do you, or someone here, know if it is possible to build a pneumatic ejector airlift but instead of powered by an airpump, by a venturi powerd by a sump pump?

GREAT video: PLEASE HELP ! ! wouldn't it operate the same if you just had a U shaped trap at the bottom of the main water exit? That would eliminate the need for a "T" ? ? Someone please help me understand why a simple U trap wouldn't do the same thing.... Thank you all in advance for the hundreds of replies I'm sure I will get to this question.😀

Olá ! Com minha bomba, ejeto atualmente a 30 pés, 1714 L/h, em outro já ejetei 90 pés, no proximo vou ejetar a 200 pés, o corpo da bomba que tem que ser muito resistente, aço inox é uma boa opção. se for de materia fragil, explode. Hello ! With my pump, injector currently to 30 feet, 1714 L / h, in other already ejetei 90 feet, the next will eject 200 feet, the pump housing that has to be very resistant, stainless steel is a good choice. if the fragile material explodes.

An idea

I think if a check valve was added to the out flow that would allow you to pump higher. Similar to a pitbill pump only with out the need for a plc to control it. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PFfzBbbw3sI.html

Where's the demonstration???

how could you invent it if it was patented in 1973?

***** Is the pump to the far left in this video that Glenn Martinez describes at 34 minutes 40 seconds, also a pneumatic ejector pump as it uses a one-way valve? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1EDlMqrngqQ.html

Danke für die Inspiration I try it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xm3P_UkCU-g.html

One word says all "LIAR"

I hate to break it to you, but you didn't invent it.

Lock8! I observed that the pump body weight has to be greater than the weight of the displaced water otherwise the same will float on the water as it exits. I already have an electronic version here working for more than 60 days, that is on the connected surface to a tank with 2000 liters and has pumped more than 40,000 liters of water this time without nehum problem, use a 40-pound compressor, ejeto 1714 liters per hour. Lock8 ! Observei que o peso do corpo da bomba tem que ser maior que o peso da agua deslocada, caso contrario a mesma irá flutuar a medida que a agua vai saindo. Eu já tenho uma versão eletrônica aqui funcionando a mais de 60 dias, essa fica na superficie conectada a um tanque com 2000 litros e já bombeou mais de 40 mil litros de agua nesse tempo sem nehum problema, uso um compressor de 40 libras, ejeto 1714 litros por hora.