Whatever kind of check valve is in there, drilling right through it is bound to help remove it. Cut the thin metal with tin snips, nippers, a rotary tool, or whatever you have available that can cut thin metal. (Lowe's sells it by the foot in the plumbing department, for about 30 cents a foot, so you'll want a dollar or so's worth.) If you have a different brand of pump, you may need to drill yours to tear up the rubber, and blow the bits out. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. This took about a minute of drilling in several goes spread out over a few minutes, drilling from either end while holding the fitting firmly with a wrench. (With the Slime 2060-A, anyway.) 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 attach the new check valve to the barb: (1) Make sure the arrow on the check valve is pointing TOWARDS the pump, so that it will allow air flow INTO the pump, but not back out through the intake. (3) Turn them around. )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. (5) Replace the nut and tighten it up, hand tight. on Introduction. thanks. Maximum amount of digits: 6. It may have a little more restriction than that other thing, but sometimes you need something available. And here's shortshift's Instructable on Basic Vacuum Bagging: https://www.instructables.com/id/Vacuum-bagging-basics./ Cool. Once you've got the crimp off, work the hose off the fitting. If you drill too fast, or for too long, you'll just heat things up and dull the bit faster. 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. Once you've drilled it, blow the metal shavings out. Access My Account, Order History, Lists and more here. The 'lip' part of the piston disc is somewhat disintegrating. Large Vacuum Sealer Bags for Clothes, Comforters, Blanket, Bedding, Across International SMF-010 AI New EZ-Swap Vacuum Pump Exhaust Oil Mist Filter with KF25 Fittings for Degassing Chambers Vacuum Ovens, LUMAX LX-1324 Rotary Barrel Chemical Pump (General Purpose). 3D Printed Bike Lights With Fusion 360, Summer Holidays for Chicken (using Poor Man's Fibreglass). I just finished building the Vac pump in this "Instructable" and I was easily able to pull enough vacuum for the testing I use here at work. (Like near the beginning of evacuating a vacuum bag or the vacuum tank for my vacuum former.) Is the lip replaceable? As usual with drilling metal, you should to do that in little spurts, at fairly low RPM's, and frequently pull the drill out to get shavings out of the way and let the bit cool. (4) Put them back on the shaft. Mine cost about $4.00. Now (1) Unscrew the nut on the end. ya mean that hasn't been done yet? (You might be able to get by with a file and a pair of pliers, or even just some needle-nosed pliers. Youre seeing this ad based on the products relevance to your search query. (You might need a spacer such as a large nut to keep the hose barb from sticking all the way to the bottom of the threaded hole; I'm not sure.) A vacuum pump is just an air pump that you use for sucking rather than blowing. 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. 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. At any rate, I just drilled through the existing hole with a 1/8" drill bit. braided PVC hose. Share it with us! 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Top subscription boxes right to your door, 1996-2022, Amazon.com, Inc. or its affiliates. McMaster-Carr sells these online. 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. Hand-Pump for Travel! . That lip flares out and seals against the cylinder on the downstroke. Now examine the hose fitting carefully. Once that's done, you can attach the long remainder of the hose to the other barb, in the same way; the other end is what you attach to whatever you're sucking from. Can this run 25 psi I need a pump that can but don't want to spend a lot of money. Once you have the ball out, check to see if you have a hole clear through the fitting. Will this effective for a physics experiment? The straightforward way to do that is just to drill it with a 1/8" drill bit; just drill down into the hole to take away any extra bits of metal that retain the ball, and you can roll the ball right out. I think a lot of people would be interested. Vacuum pumps connect to systems for air or material removal such as filtration or packaging. (2) A check valve with hose barb ends to fit 1/4" I.D. Question If you go that route, you'll need to use smaller-diameter hose to connect it; let me know how it works out for you. Shop products from small business brands sold in Amazons store. I'll see about putting something together. 1/4" neoprene tubing. (2) Pinch the rubber and metal disks together, and pull them off the end of the shaft. You don't want them getting in the pump. Pry and bend and tear it apart bit by bit.) Hello! That's a kind clear flexible tubing with braided reinforcement; small diameters stand up very well to vacuum, unlike some other small hoses. All I had to do was bend them outward again. 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. Of course I'd cite your vacuum solution as a means to the end :), 15 years ago on Introduction. Rotary vane vacuum pumps generate stronger vacuum and air volume than diaphragm or liquid ring vacuum pumps. 80% More Storage! Double-Zip Seal and Triple Seal Valve! Pumps with pressure gauges often use a different kind of check valve, and have air space around where the gauge attaches that may affect how much vacuum you can pull once the conversion is done. Screw the hose fitting back onto the pump, and tighten it hand-tight with a wrench. )Looking for a "floor pump" at an auto parts store is a better bet than looking for a "bike pump" at a bike shop.You'll also need:(1) Three or four feet of 1/4" I.D. ), 7 years ago 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. There's an oval cavity inside it, and a little metal ball that can move back and forth in that cavity. 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. Apparently this instructable is the "hack of the day" over on www.hackaday.com; cool. 8 years ago http://www.plenty.org/soy/vacuumpump.html, https://www.instructables.com/id/E791HNXF23Z39P6/, Be Seen! So, I just used my pump as a portable source of air for my air gun, 9 years ago It took me about 45 minutes from disassembly of the foot pump to a working vacuum. It does make rapidly pumping larger volumes of air at lower vacuum levels slightly easier. (See the next step.) 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. on Introduction. It's in the "Help" parts area (Dorman is the manufacturer) and the one I got ran about 5 bucks at AutoZone or O'Reilly. (Hot glue would probably work, if you duct tape the hose to the cylinder near the joint, to avoid stressing the joint if the hose gets pulled on.) Only digits are allowed. (Yes, I know, a new pump costs under $20 . Hi. Maybe you should do an Instructible on low-end vacuum bagging. But first you need to get the hose off, to get at the fitting to modify it. You'll find a "hose barb" there---a hollow cylindrical bit that sticks up into the hose, with a flared part to help it grip the hose from the inside. I've searched for every autosupply and hardware store and they don't have it. 7 years ago I used an aquarium check valve because its hard to find a check valve like yours in our place. I got mine for 25 cents at a local tool place, but you'll likely have to buy a 2- or 4-pack at most hardware or auto parts stores, and pay a dollar or two.You'll also need few tools:(1) An adjustable wrench, or a non-adjustable one that fits the hose fitting on your pump. I tried that and mine leaked, as well as restricting flow a little more than I like, but some people are happy with them. Try it out. Very nice. Notice that the piston disk is actually a shallow cup shape, with a lip around it. thanks for this post. When it gets sucked toward the pump on the upstroke, it makes a seal, but when it gets blown toward the hose on the downstroke, it doesn't. 9 months ago . 14 years ago 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. wowzers. Your recently viewed items and featured recommendations, Select the department you want to search in. 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. 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(You can fix those things, and I have, but it's easier just to get a no-frills pump. can anyone help me build a vacuum pump using a foot air pump with pressure gauge? You're half done. That will ensure that it doesn't lose its seal, and that it doesn't slip off. Mityvac MV8500 Silverline Elite Automotive Test Kit Provides both Vacuum and Pressure to Perform Engine Performance Diagnostics, Brake Bleeding, Fluid Transfer, Evacuation, Windshield Repair Jobs, Performance Tool W87030 One Man Automotive Hand Vacuum Pump Test & Brake Bleeder Kit Please update title, Mityvac MV8510 Silverline Elite Hand Pump, Kangzhu Hand Pump Vacuum Gun with Extension Hose, DAYUAN Automotive Hand Held Vacuum Pump Tester Set,Brake Bleeder Vacuum Pump Kit Brake Fluid Pump Bleeder with Vacuum Gauge and Adapters, Actron CP7835 Vacuum Pump and One Person Brake Bleeding Combo Kit, LeLuv Vacuum Pump LeLuv Ultima Premium Steel and with Release Valve and Gauge Blue Grip. Otherwise, look at the pictures in this instructable, and try to find a very similar pump. The exhaust check valve is in the hose attachment fitting; you need to gut it so that air can flow freely into the pump through it. 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. Now cut a short piece of hose, about an inch or so long, and fit it over the hose barb. Saves you from having to order the darn thing and pay shipping on it, and it's actually built for holding vacuum. (2) Insert the appropriate end of the barb into the litttle piece of hose. Is this why there's no suction? . About: I'm a research scientist who likes to design and build things, especially cheap, elegant tools for building things you wouldn't have thought you could make yourself. I decided to make the hole through the hose fitting a little bigger, to reduce any resistance to air flow. 14 years ago - Vacuum Pump,Vacuum Systems,Vacuum Parts,Vacuum Valves, Reply I've tried this already I don't know if there is something wrong but the air sucked is very little. I have an old pump which I'd love to be able to use again. I have been searching online for what I thought was a simple question with no luck and it is related to your post. For my Slime 2060-A, it was easier than that. Drilling straight through fitting is not difficult, and may be a good idea anyway, if you want to go to the trouble. Reply on Introduction. I need about 175 mmHg to test the instruments we work on, and this was WAY better than the converted soccer ball pump that died the other day. . (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.) Reply 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 The crucial first step is to get the right pump---a simple old-fashioned one of what used to be the standard design. 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