How to Make a Vacuum Pump

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This video will show how to make a vacuum pump, a device that can be used to suck the air out of sealed environments. This is the same pump I use to operate my vacuum cannon seen here: • How to Make a Vacuum C...
A clear vacuum chamber such as the one seen in the video can be obtained by purchasing a bell jar and vacuum plate, easily available online. I highly advise that only vessels made for handling vacuum pressure such as bell jars be used with this or any vacuum pump. If a vessel were to fail while under vacuum the implosion can be powerful enough to cause injury.
See this video for an improved piston design that can be used in this pump: • How To Make A Nerf Sty...
Vacuum Pump Parts:
16" of 2" PVC Pipe
20" of 1 1/4" PVC Pipe
2" End Cap
1/4"x1/8" Brass Hose Fitting
3' of 1/4" Vacuum Line
1 1/4" End Cap (x2)
1 1/4" Diameter O Ring
2" Coupling
2" x 1 1/2" Reducer
3" x 2" Adapter
3" x 4" Closet Flange
4" of 3" PVC Pipe
10" of 3/4" Dowel
Self Tapping Screws
Bearing Grease
1/8" Sheet Rubber And/Or 1/16" Sheet Rubber

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Опубликовано:

3 июн 2013

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Комментарии : 539

@tbsomerville5798 8 месяцев назад

A wonderful build that is terrifically explained… you earned my subscription.

@Nighthawkinlight 11 лет назад

That's a good idea. That should work quite well also.

@G4mer_D4d 5 лет назад

ive seen several of these videos tonight, researching for a project and , this by far is the best done video ive seen. thanks a million.

@eddievilla1584 4 года назад

I just got done making this PVC vacuum pump. This seems to be a great design for a vacuum pump, I did make one modification to it that may save you time building it. I moved the exhaust check valve that comes out of the side of the 2” pipe, I moved that check valve to the bottom of the 1 ¼” piston cap and so then it vents out the top of the push/pull handle. This change seems to make it easier to build this pump. I hope this helps someone.

@oldtymeliving4198 Год назад

I was worried about the placement of the vent. It would be impossible to replace if needed as the parts are glued and you can’t get to it. I’m looking to vacuum seal jars in a 2.5 gallon glass chamber is this pump capable.

@Nighthawkinlight 11 лет назад

Yep that would help. You also have to account for a small amount of air still remaining in the chamber after the down stroke, which is where a longer chamber will allow more vacuum to be drawn since it will give more room to 'dilute' the little bit of air that is never forced completely out. Dilute isn't really the best word, but I think it paints the picture.

@Nighthawkinlight 11 лет назад

As much time as it's been since my last video. Gotta think of it, figure out how to build it with common stuff, how to make it interesting, and then film it. I made two prototype pumps for this video before coming up with this particular design.

@flaplaya 9 лет назад

Love this channel. If (when) society collapses, the smart will survive. :)

@RimstarOrg 11 лет назад

Another one for future use. Thanks! And nice technique for making the groove for the o-ring. I've gotta remember that for making pulleys. I've been doing it without the drill but with the drill you'd get a better result, as well as being easier to do.

@ganjalfthegreen5312 6 лет назад

RimstarOrg the man the myth the legend

@Nighthawkinlight 11 лет назад

Going wider makes the pump exponentially harder to pull up on. A two inch diameter piston takes around 45lbs to pull up at full vacuum no matter how long the shaft is, but go to three inches and you're at 100lbs. Doable, but a lot of work. Finding a piston to fit three inch pipe is quite a bit harder as well.

@joesitter20101 11 лет назад

In this design, max. vacuum achievable is determined by the pressure required to open the check valves. Small 1/3 psi check valves are available at low cost. That lets 97.7% atmosphere to be removed so, with 29.9"Hg barometric pressure, you could achieve the removal of 29.2"Hg (741.7mmHg) air pressure. Atm. press. @ sea level is 760 Torr (mmHg) so this pump, when fitted with 1/3 psi valves could pump down to slightly less than 18.4 Torr. The key part is the valve on the inlet side. Great Job!

@Nighthawkinlight 11 лет назад

I use a black backdrop and increase the contrast slightly in post.

@old_guard2431 6 лет назад

Impressive engineering is involved to keep both materials and assembly simple. Well done.

@Nighthawkinlight 11 лет назад

I'm not sure how much vacuum is required for them, but if 28 in/Hg is enough then yes. You can pull more vacuum as well with this design if you increase the pump and shaft length.

@zoltan1953 6 лет назад

I'm really glad I went digging through your older videos. I'm definitely going to make one of these.

@Nighthawkinlight 6 лет назад

I'm very proud of this project. My vacuum pumps all still work perfectly years later. It's a great design.

@Nighthawkinlight 11 лет назад

Yep, 28's about right. With a longer pump body you would be able to pull more but it starts getting a little tall.

@TraceurArok 11 лет назад

You have an amazing narrating voice. Also, you are a clever man. 10/10

@Nighthawkinlight 11 лет назад

Some hardware and auto parts stores have sheet rubber for making gaskets. Sometimes it's red, not black. If you can't find any you can just buy large rubber washers and cut pieces for your valves out of them.

@Nighthawkinlight 11 лет назад

True value hardware carries the caps i use in this video. The design seems to vary brand by brand so you might need to call a few smaller stores to see what kind they stock.. Worst case you could order flat caps online.

@Nighthawkinlight 11 лет назад

It's two sheets of polycarbonate laminated together for the base with a schrader valve threaded in as the air release and a quarter inch hose adapter running to the pump. A big rubber gasket I cut out of a sheet to seal it. The bowl I am using is just the heaviest I could find locally, but I do not recommend using anything other than a real bell jar. If the bowl were to fail it would send glass everywhere at high speeds.

@Nighthawkinlight 11 лет назад

I believe I got it down around 28in/hg. The longer the pump body and piston stroke the deeper a vacuum it will be able to pull, but I found this size to be the most convenient to use.

@oldtymeliving4198 Год назад

Do you think this is capable of removing enough air out of 2 1/2 gallon glass jug to seal mason jars

@lawabidingcitizen5153 Год назад

@@oldtymeliving4198 Definitely, consider modifying a bike pump though, as that might work better

@hskzn Год назад

hi. diameter 50 mm strok 800 mm is i good for vacuum 0,9 bar about what do you think. can u help me ı have problem about vacuum

@SoccerToBePro 10 лет назад

You're super cool and make some pretty awesome stuff!

@chickgen 11 лет назад

Great to see you're still making awesome stuff, keep it up.

@Nighthawkinlight 11 лет назад

The valves do work better with grease, but there's no need to apply it to them specifically. If enough grease is used on the piston the valves will be covered in the excess.

@Nighthawkinlight 11 лет назад

Should be. The water would be contaminated with grease though, so you might want to use a different lubricant for that purpose.

@JonnRamaer 3 года назад

Thank you. Your orderly instruction by itself is 100% merit to this video, far more for the usefulness of this device. Again, thank you and well done!

@Kaija97 10 лет назад

You sir are the king of DIY projects

@Dragonsayian 11 лет назад

Him and kipkay are purely just inventive

@Nighthawkinlight 11 лет назад

I have. It's not quite sensitive enough for a good vacuum pump.

@JohnL9013 10 лет назад

This guy is a DIY God!

@Elijah668 11 лет назад

I love your videos... they are amazing because the way you make some of the hardest things, amazingly simple...

@GoRepairs 11 лет назад

Great build, what a useful bit of kit.

@as3fawf 11 лет назад

So simple yet so beautiful - i really like it. Thx for sharing :)

@TheGeekPub 11 лет назад

Awesome Idea.

@mooncake5899 10 лет назад

can i just say this one thing this man right here is awesome

@vladkalina69 6 лет назад

Excellent job at explaining and video supporting the explaination. Good Job!

@aidanblackwood6078 9 лет назад

this guy really loves his pvc.

@fossil98 11 лет назад

Thats a really neat way of making a one way valve!

@danielstrobel3832 4 года назад

Realy cool! I was thinking of a realy simple design for a valve and there it is!

@Nighthawkinlight 11 лет назад

I thought about it but there wasn't enough time to go over them in the video. Besides...I blew one of them up accidentally when I was testing my vacuum cannon. The projectile blew through the backstop I was using and hit the pump which I had stored behind it.

@normellow 2 года назад

This man’s a genius !

@Nighthawkinlight 11 лет назад

Bike pumps are cheap and common so I really don't have much reason to make one. If you could take the one way valve on the outside of the pipe and figure out how to connect a hose over the outlet it would be able to act as a bike pump from that line. This large of a diameter of pump body would make it very hard to reach high pressures though.

@MrkBO8 11 лет назад

Thanks for this video, another excellent DIY

@fckinnonstick9919 10 лет назад

Genius Project!

@LeonardGreenpaw 11 лет назад

You are so full of win. I wish to one day be as full of win as you.

@DJspinmaster88 11 лет назад

WOW! Well good job I really liked this build.

@vaporainwaves 11 лет назад

Omg, its awesome, you should make more vids, like putting water in it, or leafs to dry out. Amazing project.

@ColeHomestead 11 лет назад

Great job, keep 'em coming

@nfVidz 5 лет назад

This is brilliant!

@TreethanRexus 10 лет назад

This is brilliant.

@faridmak6738 9 лет назад

Realy good. thank you for hint to my project

@cajcaleb14 11 лет назад

You got big fast, NightHawk... I was your 6th subscriber I believe... now you have thousands... darn you! Keep up the amazing work! I loved your videos from the start!

@Ganjau 11 лет назад

This man has a very nice voice.

@TechVentions 9 лет назад

Simple but awesome !

@fireshotvids9188 7 лет назад

Thanks for the awesome video!!!!!

@electronicsNmore 10 лет назад

Nice project. Use E-6000 glue. It is the best. Very strong, and flexible. I use it for all my projects. The valve design is very common. In engines they are "reed valves".

@Nighthawkinlight 11 лет назад

Aren't scuba tanks typically run up to 3000psi or so? The most you could ever hope for from your typical air compressor, or even homemade is 500psi, and that's really pushing it. More likely is 150-200psi. You could refill the tanks at that lower pressure no problem, but I expect you wouldn't get more than a few dozen breaths out of them. Maybe there is a portable high pressure compressor out there that I don't know about that would be suitable, but It would be expensive and slow if it exists.

@gdxd7956 8 лет назад

Pretty nice and easy, especially the valves. I'll ceartinly be doing one.

@tomino3093 11 лет назад

This is awesome!

@SidsArt 8 лет назад

You are awesome!!! Thanks Alot man.!!

@zippy3711 6 лет назад

Nice design

@basyoni95 11 лет назад

Dude you are amazing i love all your videos :))

@trevorheinemann4204 10 лет назад

I made mine w/ a pvc elbow at the bottom because i'm low on materials. thanks for the great vid

@mackd7141 10 лет назад

I love science , well done

@ReMoBoY97 10 лет назад

Awesome and i was searching for something like this but unfortunately it is hard to build, anyway thanks for the video.

@nickjbland2000 10 лет назад

Another genius idea and I'm only 14 and have made most of his ideas and use them frequently

@charleskaminski221 11 лет назад

Thanks for the reply!

@martinclark1333 10 лет назад

Brilliant!

@Nighthawkinlight 11 лет назад

If they're big enough to cut into pieces about the same size.

@elizabethreyes2186 11 лет назад

Wow! So amazing

@jamesthemlg 11 лет назад

just epic good job

@g41thomas 10 лет назад

very talented...

@TheSeriousHawk 11 лет назад

thank you fro your time

@saudalfozan8410 9 лет назад

Nice and clever

@Wijpke1 10 лет назад

very ingenious

@aerobyrdable 8 лет назад

If anyone is wondering, degassed marshmellows are pretty terrible to eat XD

@Trebukeet 8 лет назад

Thanx. Yes, I was wondering.

@earthchanger 4 года назад

@Nighthawkinlight 11 лет назад

There already is

@Nighthawkinlight 11 лет назад

The one way valves that control air flow are backwards from a normal air pump.

@Kirby444 10 лет назад

Brilliant. Well-explained, visually perfectly organized, clear... Nice. Rare. Thank you.

@Nighthawkinlight 10 лет назад

Thanks! I hope you can put the information to good use.

@Kirby444 10 лет назад

NightHawkInLight Okay, well, I have now attempted to build it. I followed your specifications carefully (I used lithium grease as my lubricant, and it seems to be working pretty well) but am having trouble with the valves. I ended up creating a kind of spring-loaded ball valve inside of the brass fitting at the tip of the PVC tube to block air from flowing back into my vacuum chamber, but the rubber flap on the side of the tube isn't holding much of a seal unless I hold it closed with a finger or two. Have just gotten some thinner rubber to try out. Looks like you had success with these rubber flaps in the past-- any pointers/ warnings?

@gaferton 9 лет назад

Hey, what kind of negative psi are you looking at from this pump? I like the design but need to make sure it will go high enough for my needs.

@notyourking381 11 лет назад

The principle that this works on reminds me very much of the functioning of the hearts pumping mechanism

@johnrobinson4445 5 лет назад

Brilliant.

@kurtownsj00 10 лет назад

I'm an auto technician, and most hand-help vacuum pumps you buy to use as a diagnostic tool are tiny and break often, even though the bodies are brass, the valves are pretty cheap. I plan to make one of these to use when at home, since I'm not spoiled with an HVAC machine to pull larger systems down when away from the shop!

@randyosborn284 5 лет назад

Nope. This machine will not achieve the vacuum levels necessary to evacuate an HVAC system (500 microns or less). You will unknowingly leave too much atmosphere in the system.

@TheMlf 11 лет назад

Brilliant...

@TheSeriousHawk 11 лет назад

ooh. i get it thanks nighthawk it helped a lot actually have a nice day

@sarhadradha7066 10 лет назад

thank you so much

@Olaoo99 11 лет назад

Awesome!

@MattyTeare 11 лет назад

Very cool

@2awsomedogs 11 лет назад

I think you are the most AWSOME person EVER!!!!!! I love all the stuff you do you are REALY Inspiring. I find is so great, useful and fantastic that you put the as videos up. I also have a question would you be able to tell me about how much it will cost to get all the parts for this?

@Oinikis 11 лет назад

i wish there was such PVC parts here. we got really poor selectability. brilliant video anyway both pump and filming.

@rotgertesla 8 лет назад

Do you think an object could reach supersonic speed with this pump and the pvc pipe cannon?

@jacobhuebert8298 7 лет назад

Do you have to use a one way valve on the other end of the tube? On the end that connects to your chamber or cannon.

@mitchcrafter8953 11 лет назад

Nice one

@vericuel1915 5 месяцев назад

Thank you a lot! I used this + calcium chloride for my freeze drying science fair project.

@MongrelShark 9 лет назад

This is a fantasic pump. You should always use vasaleine to lube and seal air pump O rings though. The grease you used will likly destroy the o ring. I wonder how long it will last. I'd expect about 2-3 years, then the O-ring will be getting fairly had and likely have shrunk a bit. At least you will be able to get in there and fix it :)

@AntonBabiy 9 лет назад

Vasiline is petroleum based so it's also going to eat o-rings.

@MongrelShark 9 лет назад

Yet it doesn’t. My dad has been using Vas on pumps for 50 years. Lasts longer than anything else...Plus its got the right amount of lube vs seal.

@AntonBabiy 9 лет назад

Mongrel Shark OK, my bad 😉

@andrewjacoby4475 5 лет назад

@@MongrelShark O-rings for faucets and such are lubed with food safe silicone grease aka plumbers grease not a petroleum based grease Vaseline may work but silicone grease is the thing.

@sofoklatesjabu714 11 лет назад

I love you Grant !

@SynS7ven 11 лет назад

Nice... and I think I have all that already. I think I would shield the jar too, maybe an acrylic box or something. At the very least to minimize the damage. I'll wear my shields, of course. ;) thanx for the response.

@n.barnett7499 9 лет назад

Could this bring the pressure down to boil water at room temp?

@johnanders8861 5 лет назад

N. Barnett yes

@techmouse. 2 года назад

I'm so glad I found the x2 playback speed adjuster.

@davetherocketguy 11 лет назад

I would recommend giving any areas that are to be bonded to the PVC via CA (super glue) to be given a light sanding with a 180 or so thus giving more surface area for the glue to bond to. Anyways, interesting video! Thanks for sharing.