O-Ring,Viton,7.65 X 1.78 Used on Welch Chemstar 1400N Includes Phenolic vanes oil) TRIVAC D 65 B Gauge pressure is relative to atmospheric pressure, where absolute pressure is absolute. There are several common types of vacuum pumps that make sense for composites applications. Ill get back to gauges later on. Youd be amazed how much water and oven (or especially an autoclave) plus vacuum can pull out of a piece of wood! Four of the pumps in the picture above were bought used for under $200 US. And heres another reason to trust us: all our products come with a warranty and service anywhere in the world. 410643 This applies to rotary vane pumps oil-less and oil-lubricated. More vacuum equals more compaction pressure and there are few reasons to use less pressure. 619282A Most can actually be hooked up as either compressors or vacuum pumps. The only down-side might be if you are processing pre-pregs with wood-based tooling (MDF) or balsa cores or some other source of water vapor. Addressing issues with excess oil mist as soon as they occur will help to extend the lifespan of the pump. If you are a professional user, you will want to have more than one, and they can be tailored to different kind of work. Vacuum is measured by comparing the pressure inside the measured volume (vacuum bag) with either the air outside (atmospheric pressure) or absolute pressure (absolutely no air) with either a relative gauge or absolute gauge. I have killed (or mortally wounded) several pumps by using them to cook MDF which generates lots of water vapor that condenses in the oil. This requires (ideally) really high vacuum. Long term exposure to water can rust and damage the internal bits of the pump. Youll have to replace the oil with new oil before you run it. EC! 10 microns 0000042895 00000 n If youre looking for the best car-related products on the market, look no further. These pumps handle less-than-perfect bags better and provide more reliable service in a less then perfect industrial environment so ideally this is what you should get for high-vacuum vacuum-bagging. Over the years I have owned more than a dozen vacuum pumps and have dealt with many dozens more that belonged to friends, customers or employers. 0000031140 00000 n 320106 PART NUMBER Often vacuum systems are set up with a high and a low vacuum manifold. 0000029821 00000 n DESCRIPTION Get something common and high quality and then keep an eye out for a used one of the same model. How to build with composite materials: design, tooling, materials, laminating and more. We hope youll stick around for a long time, VEVOR Vacuum pump 12CFM 1 HP Two Stage Air Conditioning Vacuum Pump 110V 0.2PA Ultimate Vacuum Refrigerant HVAC Air Tool for Automobile Reparation Vacuum Evacuation (2-Stage, 12CFM). 0000054653 00000 n Updated 12/18/19: section on power hookup and oil removal for shipping, misc grammatical, spelling edits. I have bought several pumps on Ebay, and on Craigslist and from online surplus dealers like HGR Surplus. Somebody also gave me a Gast piston pump that I re-gifted to a friend after tiring of the noise super noisy! Again, air flowing through this type of pump is not ideal. %PDF-1.4 % O-Ring,Viton,25.07 X 2.62 MM 0000050802 00000 n Exhaust Valve, Bypass None of the other options are going to cut it for pulling high levels of vacuum. For small vacuum bagging jobs with wet laid material, a single phase piston pump would be fine. So heres a video that goes with this article. Used on Welch DirecTorr 8917A Getting a relative gauge up to 29.9 inHg or an absolute gauge down near 0 (millibar, torr, kPa) is very possible with a good bag, good plumbing and a well maintained pump. DESCRIPTION Some pumps run at a higher temperature and are better suited (supposedly) to handling moisture. This article discusses the options and my opinions on what the best choices are for different types of composites work. If you can afford it, get a new or lightly used one. If you bought a 3-phase pump, you need to make sure the motor runs in the right direction. PART NUMBER There is nothing to worry when you notice this kind of vapor because the pump emits it while pumping on a specific chamber from the atmosphere. The pump will try to provide enough pressure into the chamber. Absolute gauges are more repeatable because the atmospheric pressure changes with the weather. So you can adjust the vacuum level to tailor the pressure required for the job. Shaft Seal, 3/8" I have used them at work and always wanted one for myself but been too cheap to get one! You could do with less, but if there are some leaks you could end up with less pressure than you need. Total length of the joint is a few feet (1m) and you are using two 12 oz (400gsm) tapes. So practically it isnt much of an issue but it is important to understand. O-Ring,Viton,82.22 X 2.62 MM It has a switch and a handle and pulls 15-25 inHg at 1 CFM. QUANTITY 0000054354 00000 n 0000047440 00000 n How much pump do you need? You pay extra for the convenience, but the concept and execution is excellent. Mechanical Shaft Seal with Screws, 0 Major maintenance kit (excl. I would suggest a oil-lubricated rotary vane pump for pre-pregs in almost every case. You should plumb the exhaust from your pump outside, especially with an oil-lubricated pump. Our products are high-quality, but theyre also affordable. If you are looking to get a first vacuum pump or to do simple vacuum bagging then a smaller oil-less pump piston, diaphragm, or rotary vane would be a good place to start. #}B}}R50jZjY_]k /:/zhcdblO;_{ I had a Leybold Sogevac pump once that supposedly did this and it needed special oil not sure how much it helped but it was a nice pump. 5 Gallon Vacuum Chamber Stainless Steel Degassing Silicone Kit 5CFM Vacuum Pump, Gaga Ball Pit Inflatable Xl 20' Gagaball Court W Electric Air Pump - Inflates In, VEVOR Pool Pump Swimming Pool Pump 72V DC/900W Solar Water Pump 62 FT/92 GPM, Vevor Hand Water Pump W/stand Well Pitcher Cast Iron Press Suction Garden Green, Hydraulic Log Splitter Kit,16 Gpm 2 Stage Pump &25 Gpm Auto Control Detent Valve, VEVOR Deep Well Pump 400ft 2HP Stainless Steel Underwater Bore Submersible Pump 220V Deep Well Water Pump with Control Box, 1/2" Air Driven Double Diaphragm Pump Qby4-15 Poly/sant Valve Balls Included, VEVOR Deep Well Submersible Pump 1/2 HP 150ft Deep Well Pump 25GPM Stainless Steel Deep Well Pump For Industrial and Home Use (1/2 HP 110V), VEVOR Pool Pump Swimming Pool Pump 48V DC/500W Solar Water Pump 49 FT/75 GPM, Vevor Inflatable Dock Platform Inflatable Dock 7'x7'x6" Floating Dock W/ Pump, Shallow Well Jet Pump W/pressure Switch 1hp 17.6gpm, Hmax 216.5 Ft, 115v, Hydraulic Log Splitter Pump Hydraulic Motor 16 Gpm,2 Stage Hi Lo Gear Pump, Vevor Antique Hand Water Pump Pitcher Pump Cast Iron For Yard Ponds Garden Black, Inflatable Dock Platform Inflatable Floating Dock 10x6.5 ft w/ Electric Air Pump, Hydraulic Pump Hydraulic Tractor Pto Pump 16.6 Gpm Gp-pto-a-7-6-s @ 540 Rpm, 3 Quart Double Acting Hydraulic Pump Dump Trailer 12v Unit Pack Control Kit, Inflatable Dock Platform, Pvc Floating Fishing Dock 6x5 Ft W/ Electric Air Pump, Vevor Pool Pump Motor Electric Motor 3/4 Hp 115/230v Swimming Pool Motor 3495rpm, Vevor 30mpa High Pressure Air Pump Scuba Pcp Compressor Auto-stop 12v 110v 220v, Pto Pump Hydraulic Pump Hydraulic Tractor 21.2 Gpm 540 Rpm, VEVOR 1.6HP Sewage Pump 220V Stainless Steel Submersible Sump Water 7100GPH Submersible Water Pump, Vevor Transmission Fluid Extractor Dispenser Atf Refill Pump Kit 10l 14 Adapters, Vevor Pcp Air Compressor 4500psi Pcp Airscuba Air Pump Portable Auto-stop, Vevor Grease Pump Air Operated Grease Pump 10 Gallon 40l Pneumatic Grease Bucket, Vevor Pool Pump Motor Electric Motor 1.5 Hp 115/230v Swimming Pool Motor 3463rpm, Vevor Pool Pump Motor Electric Motor 1 Hp 115/230v Swimming Pool Motor 3450rpm, Vevor Moonshine Still Water Distiller Brewing Kit 13.2gal W/ Water Pump, Vevor Linear Air Pump Septic Aerator Pump 25w W/8 Outlets Diffuser For Fish Pond, Vevor Turbine Shaft Pump Stator Seal Ring, 3pcs 4l60e Transmission Seal Tool Kit, Hydraulic Pump Auto Lift Power Unit Pack 220v 60hz 2950 Psi 4 Gal Tank 3 Hp, Electric Warmer Pump Dispenser Nacho Cheese Sauce Melter 1 Pump W/heated Spout, Hydraulic Power Unit Double Acting W/ Pressure Gauge Hydraulic Pump 12 Quart, Vevor 30mpa 4500psi High Pressure Air Compressor Pcp Airscuba Air Pump Auto, Hydraulic Power Unit Hydraulic Pump Double Acting 20 Quart Dump Trailer Pack, Hydraulic Tractor Pto Pump 7.4 Gpm 540 Rpm Hydraulic Pump, 120w 2800rpm Gem Faceting Machine With Pump Jewelry Rock Jade Polishing. H$ML^->dgCe@+Ew|1.wqo.\R,mrJ[-6Jcn_~|q?_oG 0000031057 00000 n Video: How to Choose a Vacuum Pump for Vacuum Bagging Composites. There are some special cases with vacuum infusion where youll want two very different things out of a vacuum pump and my strong suggestion is that you get two different pumps! Debulking benefits from high volume to save time and high vacuum levels to really squish plies. Many people tend to think that whenever there is smoke emitting from the pump, it means there is something wrong with the machine. Worst case if you have a leak in a bag or a fitting come disconnected, your pump can exhaust oil mist for hours filling up the air with a haze of micro oil droplets that contaminate everything with oil. Some high-vacuum pumps run hot to boil off moisture and need special oil. Looking for common and well supported brands of pump is a good idea. The second goal is to bleed off excess resin from a wet-out laminate. POWER CORD_HANDLE_SWITCH, Description: An up-rated filter to reduce oil mist from a rotary vane vacuum pump. The Becker and Busch RC0021 were more. Many pump manufacturers publish a graph of this flow rate against vacuum level. articles, videos, photos: Copyright 2022 Chris Rogers. 0000031573 00000 n Adixen. The vacuum level will be high and the pump will be quiet and reliable. Tags: Better to buy three used ones for $1500 total and have two that work than to spend $2500+ on one new one and not have a backup. You can suck down bags with one but dont hook it up to a regulator that bleeds air into the pump to reduce pressure see oil issues below. The pump will collect some of this vapor in the oil and it will get all frothy which will reduce the ability of the pump to pull vacuum. Backpressure can lead to leakage in the seals as they are forced backwards to their design, and in some cases can even damage or break the seals. Here you dont need lots of vacuum pressure, maybe only 10-15 inHg (500 mbar, 380 Torr) but the bag seal may not be perfect and a lot of it is overhead so youll want some capacity, maybe 10CFM or more. Hose Barb fitting, 10mm barb, 1/2 inch NPT thread Description: Vpump Hose Barb fitting, 1/2 inch NPT thread, 10mm hose barb The brass manifold with the three flare fittings needs to be removed from the vacuum pump. Oil-Lubricated Rotary Vane pumps if you can get one, this is the best option for high vacuum. If you disagree with anything here, please get in touch. I use brass (less corrosion than steel and cheaper than stainless) Parker ISO-B style couplers for small hoses and either big ISO-B fittings or Cam-lock style connectors for larger hoses. Replacement internal filter available, Standard adaptor plug for UK 3 pin to Euro, Flare, SAE thread Plastic Blanking caps for vacuum pumps. 0000100176 00000 n and will include prejudices based on my limited experience. The Busch pump in the video and charts would be minimum-sized for this a bigger version would be ideal. We can measure the amount of air removed from a vacuum bag relative to the air outside (atmospheric pressure) with a relative vacuum gauge. For bedding core or consolidating a laminate without bleeding much resin you really need a pump that will pull a low vacuum. Sometimes you get trash and sometimes you get a deal. Are you concerned about possible damages? Please do not copy without permission. For cooking, there needs to be enough volume to handle any moisture gracefully and as close to full vacuum as possible for optimal compaction. One company worth looking at if you are in a manufacturing environment is Vacmobiles in NZ. The article has more in-depth information though! QUANTITY Torr makes some crazy rugged metal sheathed hoses but I havent used them. In a production environment, high quality rotary vane pumps are a good choice. Check out the little Gast one in the video and charts. Here is where Id recommend switching over to a oil-less (or dry) rotary vane pump that can handle running at reduced vacuum. What you choose to buy will have a lot to do with how much vacuum you need to pull, how much air you need to move and how much money you can spend. Bigger pumps are available used too often at even steeper discounts because they are huge and need three-phase power. It was probably 20 years old when I got it and is probably still going somewhere out there. This is mostly a consideration for disposable-bag type infusion. Capacity (CFM or M^3/HR) in blue is proportional to pump power 0.16kW for the tiny Edwards and 0.90kW for the big Busch. For more about pre-pregs check out my article on Laminating with Pre-pregs. 1 For pre-preg processing you want as much vacuum as you can get. Module Gasket On more than one occasion I have seen a fog of oil mist fill a room. View cart for details. your oil will get all frothy like a milkshake and you will need to change it more often. The vacuum exhaust is all the air that came out from under the bag, so it can include volatiles from the resin. If you need a 7hp vacuum pump for composites work, you have something going on and you know better than I do what you want. It can do small work all day long and if youre careful you can infuse something 25 feet (8m) long no problem. More on all this in my Introduction to Vacuum Infusion and Troubleshootin Vacuum Infusion articles. They spew oil all over if you run them open, and they get very hot. Once you have that vacuum pump, you are going to need a bunch of other stuff too. A vacuum pump is necessary equipment for many types of composite processes. A dry rotary vane, diaphragm or piston pump with a regulator is ideal. Most pumps can perform to their rating only at free air or no-load condition. This is a theoretical capacity. You can often go to your local hydraulic hose maker and have them spec. 0000054329 00000 n For room temperature use, heavy-duty air hose is fine for vacuum if youre not shooting for high performance. These low vacuum levels really rule out the oil-lubricated rotary vane pumps because they dont do well running at reduced vacuum with air flowing through for hours. Were confident that youll be satisfied with your purchase and will recommend us to all your friends. Updated 6/17/20: video integration, example pumps and pics, Updated 1/13/21: wet layup and infusion sections links and better heading layouts, Updated 5/6/21: smaller graphics, PNG for sketches, lower quality jpegs, no embedded youtube just link with picture. My favorites are the Becker dry rotary vane pump and a oil-lubricated Busch RA 0025 which is 3 phase and not shown here. 22 CFM Youll want support and parts, and probably you should get multiple pumps of the same model so you can have some parts and maintenance overlap. Exhaust Valve, Bypass Many brands make similar pumps and there are tons of them available new and used in a wide variety of conditions. It isnt necessary or really all that helpful and pumps that have this feature are often too high strung for composites work and will fail sooner than a more standard duty pump. 1401E It is not healthy, and it is not good for all your clean oil-free work surfaces and materials. 1 Running a pump backwards is super bad for it it ruins the vanes and youll need to rebuild it. 0000097765 00000 n They work. 1401D a series vacuum in red is a product of pump type oil lubrication (three on the right) yields high vacuum. To buy this 12 cfm vacuum pump, all you have to do is add it to your cart, place your order, choose a convenient payment method, choose a convenient delivery method (we ship worldwide! You are running a small shop making pre-preg automotive parts. Replacement power cord, handle and switch assembly Robinair Vacuum Pump spare - REPL. Many manufacturers make multiple versions of the same pump with different performance specifications like the older Busch RA, RB and RC designations. You want to use thread sealant on each assembly and buy decent couplers. Something went wrong. 4 0000054171 00000 n My favorite size pump is the 1/2-2HP range. You are setting up a work-cell for a set of production infused parts with reusable silicone vacuum bags. 412962 The overall cost of the pumps will be small compared to the rest of the tooling and equipment needed, and the cost of losing vacuum or interrupting production is high. Dont run your pump without oil in it. A \hr-IE_ckr1}:Yagm?a"V"i4PnW. Youll want to keep an eye on your oil and change it regularly. For this type of work you need good vacuum and really good durability because youre going to run it hard and put it away wet often literally! 0000037260 00000 n And make sure you get the right oil for your pump. 0000050871 00000 n 619378 Weve tested over 10,000 automotive products over the past few years so that we can show you the very best of them. 0000029619 00000 n 0000006386 00000 n oil) TRIVAC D 16 B, Major maintenance kit (excl. 0000055878 00000 n I would only use one of these for very high vacuum, low flow pre-preg use in a situation where there is little or no moisture from the materials or tooling. Also before you bid, try to call up the brands service provider in your area and see about parts availability. 0000101400 00000 n The atmosphere outside presses down on the outside of the bag with its full weight, which is approximately 14.7 lbs per square inch or about 10,300 kg per square meter (101 kPa). 71213150, Inner ring for rotor A20405724 Be safe! The reason a vacuum bag presses down on its contents is that the atmosphere (air, sky, all the clear stuff up there) weighs a whole lot. Basic Numbers and Calculations for Composites, Composites Details: Edges, Holes and Joints, How to Choose a Vacuum Pump for Composites, Vacuum Stuff: Hoses, Fittings and Accessories, Carbide and Diamond Cutters for Composite Machining, Fixturing with 5 Minute Epoxy and Cradles, Long-fiber Composites 3D Printing in 2019, Festool Power Tools: For When the Dust is Super Gross, Dinghy Bunk Plugs with Sprayable Tooling Paste, How to Choose a Vacuum Pump for Vacuum Bagging Composites. Do your research, shop around talk to people and ask questions. I have had several fractional horsepower diaphragm pumps that use 110v power and have a little handle and gauge on top and they are perfect for this. 0000030409 00000 n For run-of-the-mill pumps, a standard vacuum pump oil is probably fine. If you cant afford their units, you can certainly use them for inspiration in building your own. Youll run this pump right up until you are about to clamp off the resin feed lines after the part is full. 0000098989 00000 n Pre-pregs are meant to have the right amount of resin in them or just enough extra that you can bleed them down to the desired volume or weight fraction. This site contains information that reflects the opinions of individual authors mostly me, Chris. 0000056579 00000 n Hose Barb fitting, 1/4 inch thread NPT, 6mm hose barb. Genuine OEM product. You are repairing a boat (its always a boat with me) that was damaged in a collision. This introduces a little bit of airflow that allows the pump to vent off water vapor or other contaminants coming out of the oil. 0000001605 00000 n You can rig up regulators that dont flow air through the pump, but standard ones will just bleed air into the line to reach the set level which will be bad news for your fancy millibar-chasing vacuum-pulling oiled-rotary-vane suckin machine. Genuine Leybold OEM Parts Kit. Here is a chart comparing the capacity and maximum vacuum of these six pumps. 0000098952 00000 n 0000028210 00000 n Mechanical Shaft Seal with Screws, 0 Edwards E2M12 E2M18 E2M28 E2M30 Mounting Foot 26501031. DESCRIPTION Several companies make small ones that are handy for portable use. Home:Articles:Tools and Equipment: How to Choose a Vacuum Pump for Composites. The rotary-vane Gast pump shown above is also nice, and it has more volume capacity but its a little noisier.