- Vacuum Pump,Vacuum Systems,Vacuum Parts,Vacuum Valves, Reply (2) A check valve with hose barb ends to fit 1/4" I.D. You COULD do that, and I'm pretty sure it would work fine. 9 months ago I'll see about putting something together. I used an aquarium check valve because its hard to find a check valve like yours in our place. 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Rotary vane vacuum pumps generate stronger vacuum and air volume than diaphragm or liquid ring vacuum pumps. (I used titanium-coated but very cheap drill bit from Harbor Freight.) Notice that the piston disk is actually a shallow cup shape, with a lip around it. I've searched for every autosupply and hardware store and they don't have it. For my Slime 2060-A, it was easier than that. (I have no connection to Auto Zone or Slime, and no reason to think that other brands aren't just as good, but if you use exactly the same pump, you should have zero difficulty following the directions. I used a check valve from what appears to be a fish tank setup (ACP was the supplier). on Introduction. This lets air out, but not in; it's what's called a "ball check valve," and it's built right into the hose barb fitting. Now (1) Unscrew the nut on the end. on Introduction. Now use a wrench to unscrew the hose fitting from the base of the pump. 7 years ago (You can fix those things, and I have, but it's easier just to get a no-frills pump. I got a Slime brand 2060-A at Auto Zone (an auto parts chain store) for $10, and it's perfect.You want a simple cheap pump with:(1) a shaft that's a metal rod about a 1/4" or so in diameter, not a 1/2" plastic tube(2) a cylinder top that unscrews, or can be released by unscrewing a few small screws(3) a rubber disk and metal plate that are held onto to the end of the rod (opposite the handle) with a nut, so that you can just take them off and reverse them(4) a metal fitting where the hose attaches, with a six-sided base, which unscrews like a nut. (You might even be able to tear it apart with a small screwdriver and needle-nosed pliers, with some effort. (For other pumps of a generally similar old-school design, you may have to drill the hose barb to make the hole big enough to release the ball.) You don't want to lose the grease and get it all over other things, so prop the shaft up with something to keep the piston disk off your work area. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. I did that by inserting a screw into the end of the barb, and turning it with a screwdriver while holding the fitting with a wrench. Otherwise, look at the pictures in this instructable, and try to find a very similar pump. . Now cut a short piece of hose, about an inch or so long, and fit it over the hose barb. You don't want them getting in the pump. thanks for this post. And here's shortshift's Instructable on Basic Vacuum Bagging: https://www.instructables.com/id/Vacuum-bagging-basics./ Cool. Now you have a vacuum pump. That will ensure that it doesn't lose its seal, and that it doesn't slip off. on Introduction, Even ones with a metal shaft usually don't work! The 'lip' part of the piston disc is somewhat disintegrating. Once you've drilled it, blow the metal shavings out. 14 years ago A vacuum pump is just an air pump that you use for sucking rather than blowing. These pumps generate vacuum, which creates suction. )(3) A small hose clamp. Diaphragm vacuum pumps are used in applications where corrosive fumes may be present. (Under vacuum, it probably won't lose its seal because vacuum will suck it inward onto the barb; if it slips off, though, you're hosed.) Now examine the hose fitting carefully. The threads of the screw gripped the two bent-in pieces of metal and pulled them outward enough to make room for the ball to come out. This doesn't make much difference most of the time, because the resistance there is usually small relative to how hard you have to pump anyway, for any substantial vacuum level. That's a kind clear flexible tubing with braided reinforcement; small diameters stand up very well to vacuum, unlike some other small hoses. but I would rather use this one if possible! Maximum amount of digits: 6. Hey man would this be able to get 25psi in a vac chamber that's the minimum I need please get back thanks, 8 years ago Hand-Pump for Travel! or is there something to the syphon ball pumps that would only work with a fluid and not a gas?? Mine cost about $4.00. on Introduction. I have an old pump which I'd love to be able to use again. Shop products from small business brands sold in Amazons store. It's the first one I've found thrifting, and would be nice to put to use 10 years ago Now you can wipe the nasty grease off your fingers. It may have a little more restriction than that other thing, but sometimes you need something available. Very nice. ya mean that hasn't been done yet? can anyone help me build a vacuum pump using a foot air pump with pressure gauge? Share it with us! (Part number 6079T53 from http://www.mcmaster.com )(Some people use an aquarium check valve, which costs about $2 at a pet shop. Hello! I was looking to use a syphon squeeze ball pump normally used to suck gas and other liquids, but use it to suck air and create a vacuum. can't fine one search result that says this will work although it makes a lot of sense that it should. Not looking for a project here just wanted to buy a syphon ball and use it to suck air like you did in your peeps video Do you think that this would work? To get the ball out, you need to make the hole as big as the ball all the way to the end of the barb. That's several times as strong as a vacuum cleaner's pull, and three quarters as strong as the best possible vacuum pump. Price and other details may vary based on product size and color. (5) Replace the nut and tighten it up, hand tight. (You probably can see the ball, just barely, when you tip the hose barb down it rolls almost to the end of the hose barb, and stops short when it hits a couple of extra bits of metal, which partly block the end of the hole.) There is a piece of thin metal crimped around the end of the hose, to clamp it onto the fitting. Sign In to access your account information. Drilling straight through fitting is not difficult, and may be a good idea anyway, if you want to go to the trouble. You could clean the oils off the exhaust hose fitting and the place it attaches, and epoxy it in backwards, with the hose barb pointing into the threaded hole. Thanks, I'm going to try it, but I'm going to use a tire valve stem with my vacuum chamber so I can use the hose that comes with the pump, Hello, how much Hg or bar can I expect from such a vacuum pump? I was able to draft a vacuum pump quite simply and with the bagging equipment found at Aerospace Composites, I put together a pretty good system for some fiberglass layups that I'm working on for my motorcycle project.Here's a fuel tank prototype that I've been working on. A question came up over there about reversing the exhaust check valve rather than replacing it with the one from McMaster-Carr. I've tried this already I don't know if there is something wrong but the air sucked is very little. I think a lot of people would be interested. )(3) (maybe) a power drill with a 1/8" drill bit suited for drilling a little bit of metal, or for the 2060-A, a screw and a screwdriver.Rags or paper towels are good, because you'll be dealing with greasy things. Whatever kind of check valve is in there, drilling right through it is bound to help remove it. McMaster-Carr sells these online. This is both a hose barb for attaching the hose, and a check valve we'll need to gut(5) reasonably long throw and reasonably large diameter (for a bike pump); a skinny pump will be slower, and(6) no pressure gauge. )If you have an Auto Zone nearby, go look for a Slime 2060-A "Floor Pump"; it's cheap and you'll be all set. Will this effective for a physics experiment? 1/4" neoprene tubing. . 80% More Storage! 14 years ago (See the next step.) It took me about 45 minutes from disassembly of the foot pump to a working vacuum. I tried that and mine leaked, as well as restricting flow a little more than I like, but some people are happy with them. Any advice for how to use a found pump that does have a gauge? If you're using 1/4" braided PVC like me, the hose will probably fit well enough to make a seal, but not tightly, and it's a good idea to put a hose clamp around it. The crucial first step is to get the right pump---a simple old-fashioned one of what used to be the standard design. You can convert an old-fashioned "floor pump" ("bike pump") into a vacuum pump that can take over 75 percent of the air out of something. Did you make this project? (You might be able to get by with a file and a pair of pliers, or even just some needle-nosed pliers. To reverse the piston disk, unscrew the cylinder top, and pull the handle out all the way, so that the the piston disk comes clear of the cylinder---be careful, it's greasy. thanks for your reply! It should be snug; work it in most of the way. The piece of hose should be long enough to accommodate the barb, and the barbed end of a check valve, but not much longer. Now you need to get that stuff back in the cylinder, and you don't want to scratch the piston disk on the sharp inside edge of the cylinder, so: (6) Pinch the rubber disk from the sides, into an oval shape, (7) Angle the shaft and the disk about 30 degrees relative to the open end of the cylinder, and insert one end of the oval, and (8) Gently work the rest of the disk into the cylinder, pushing it inward anyplace it seems to catch on the edge, and straighten the shaft. But first you need to get the hose off, to get at the fitting to modify it. http://www.plenty.org/soy/vacuumpump.html, https://www.instructables.com/id/E791HNXF23Z39P6/, Be Seen! I would want to use this for a Bell in a Jar experiment for our project. Cut the thin metal with tin snips, nippers, a rotary tool, or whatever you have available that can cut thin metal. 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