Was there any observed change in the compressor listed cfm vs what the Venturi was able to pull? I’m hoping I can find a ratio to do some math to see if it would work for my application. Great product though.
Some data on the Venturi for you that might help you: Venturi reaches max Vacuum at around 80 PSI of input. More pressure does not increase the vacuum. It will pull up to roughly 26 inhg. The Venturi does not require much CFM. A compressor that produces 2.5 CFM @ 90 PSI will be able to run the Venturi.
As you'll anticipate, that will depend on your compressor size. It's not a direct exhaustion of the tank when using the venturi, but your compressor will kick on to replenish the tank. The vaccuum will work fine with most portable compressors without any real issue, but the venturi system isn't the perfect choice for prolonged (vaccuum pressing, etc.).
Does throwing the switch just cut off the air flow creating the vacuum or does it also allow you to hold a vacuum after the air flow is cut off? Like a check valve to maintain vacuum after air line is cut off.
How would I be able to increase my vacuum from -25hg to -30hg? I was asked this at work. When our material is picked up, the guage reads -25hg. Would I need more air pressure? Smaller suction area? Pump or use a different vacuum type?
For a lifting apparatus, the "suction cup" should be able to lift around 12 lb per square inch of surface area at -25 hg. (A 12" square suction cup should be able to lift about 1700lb at -25hg) A perfect vacuum is -29.92 hg so 30 is not possible. With a venturi you will reach a maximum at a certain CFM Usually in the -25hg or -27hg range depending several factors. From there more air pressure wont make a difference. I would first figure out if your suction cup has enough surface area to lift the weight you need to, if yes then you may need a vacuum source that can provide more CFM as the problem is more likely a leaky clamping surface.
Also could I run water through it instead of air pressure I want to generate a vacuum off of a gravitational force of flowing water without the use of electricity
well this effect needs a high speed produced by the compressd air, right? so how big must be my Air Compressor Tank to work as a vacuum for 5 continuous minutes without loose preassure? is the capacity of the tank a real problem to decide buy a vacuum instead of this?
We have used the Venturi with a small /portable air compressor rated at 2.6cfm at 90PSI and it was able to run the venturi with no problem. A larger air compressor would cycle on and off less frequently if you your running the venturi for extended periods.
@@InfinityTools I wouldn't say no to this question. With a specially designed venturi this is 100% possible. It might not be possible with the setup in this video but since air and water are both fluids a proper setup with a pressure washer would create a suction.
We used water based venturis at school for rapid filtering. I think the unit was called a Buchner funnel. The venturi was plastic fitted to any sink tap, with a side arm where the vacuum occurred. It should be a standard bit of kit from a scientific lab supply wholesaler
HI, your specific application is a little out of my knowledge base. the vacuum this venture creates should be more than adequate, however I do not know if this venturi would have a high enough CFM capability. I believe this would depend on the size of the parts being molded.
Hi, there are a few to many variables to say with certainty. I would recommend picking up the VEN-003 vacuum gauge and fitting for the venturi so you can monitor the vacuum being pulled. This would allow you to set up your system and get everything dialed in without guesswork. www.infinitytools.com/1-5-vacuum-gauge-w-brass-fitting-for-venturi-system
+David Kosh The volume depends on the output pressure of your air compressor. The higher the pressure the higher volume of air and the louder the switch. At 80psi I would say the venturi is not so loud as to require hearing protection but it is not what I would consider quiet either.
Was there any observed change in the compressor listed cfm vs what the Venturi was able to pull? I’m hoping I can find a ratio to do some math to see if it would work for my application. Great product though.
Some data on the Venturi for you that might help you: Venturi reaches max Vacuum at around 80 PSI of input. More pressure does not increase the vacuum. It will pull up to roughly 26 inhg. The Venturi does not require much CFM. A compressor that produces 2.5 CFM @ 90 PSI will be able to run the Venturi.
Most interestingly my Powermatic 4224B wood lathe has exactly the same system built in for a vacuum chuck no other lathe anywhere has that feature.
How many seconds of vacuum do you get before the air compressor tank is totally empty?
As you'll anticipate, that will depend on your compressor size. It's not a direct exhaustion of the tank when using the venturi, but your compressor will kick on to replenish the tank. The vaccuum will work fine with most portable compressors without any real issue, but the venturi system isn't the perfect choice for prolonged (vaccuum pressing, etc.).
Does throwing the switch just cut off the air flow creating the vacuum or does it also allow you to hold a vacuum after the air flow is cut off?
Like a check valve to maintain vacuum after air line is cut off.
No, once you flip the switch on the Venturi device back to the off position, the vacuum is released.
Can you set up a system using that product that turns on and off for vacuum bagging operation?
The Venturi system has an on / off switch allowing it to be used for vacuum bagging operations.
Does it turn on and off automatically if your bag isn’t perfectly sealed?
@@pearsoncourtneys4671 no it doesnt work like that.
Where can I get that vacuum Guage and set of plug sir
How would I be able to increase my vacuum from -25hg to -30hg? I was asked this at work. When our material is picked up, the guage reads -25hg. Would I need more air pressure? Smaller suction area? Pump or use a different vacuum type?
For a lifting apparatus, the "suction cup" should be able to lift around 12 lb per square inch of surface area at -25 hg. (A 12" square suction cup should be able to lift about 1700lb at -25hg)
A perfect vacuum is -29.92 hg so 30 is not possible. With a venturi you will reach a maximum at a certain CFM Usually in the -25hg or -27hg range depending several factors. From there more air pressure wont make a difference. I would first figure out if your suction cup has enough surface area to lift the weight you need to, if yes then you may need a vacuum source that can provide more CFM as the problem is more likely a leaky clamping surface.
Would this work for a small 1.5Gal Vacuum Pot? Degassing silicone and epoxies?
I have not tried it but I think it would work very well for the application.
I would be worried about running epoxy fumes thru your ventury filter and gumming it up.
Also could I run water through it instead of air pressure I want to generate a vacuum off of a gravitational force of flowing water without the use of electricity
No. This venturi is designed for air only.
well this effect needs a high speed produced by the compressd air, right? so how big must be my Air Compressor Tank to work as a vacuum for 5 continuous minutes without loose preassure? is the capacity of the tank a real problem to decide buy a vacuum instead of this?
We have used the Venturi with a small /portable air compressor rated at 2.6cfm at 90PSI and it was able to run the venturi with no problem. A larger air compressor would cycle on and off less frequently if you your running the venturi for extended periods.
So how does the insides of it work
A venturi works similarly to an airplane wing. Definitely worth looking up and researching.
Which type of vaccum valve is this can you share model no. Please?
Very cool! Could you use something like a stream of water (out of a pressure washer say) to achieve the same effect?
No, the venturi requires air movement to work properly.
@@InfinityTools I wouldn't say no to this question. With a specially designed venturi this is 100% possible. It might not be possible with the setup in this video but since air and water are both fluids a proper setup with a pressure washer would create a suction.
We used water based venturis at school for rapid filtering. I think the unit was called a Buchner funnel. The venturi was plastic fitted to any sink tap, with a side arm where the vacuum occurred. It should be a standard bit of kit from a scientific lab supply wholesaler
Would this product work for Vacuum Assisted Transfer Molding, used for composites?
HI, your specific application is a little out of my knowledge base. the vacuum this venture creates should be more than adequate, however I do not know if this venturi would have a high enough CFM capability. I believe this would depend on the size of the parts being molded.
InfinityTools How many cfm's will this product handle? Im looking at using it for vacuum bagging carbon fiber
trying to use this for a milking system, need 11-12 Hg out of it, what psi needs to go in?
Hi, there are a few to many variables to say with certainty. I would recommend picking up the VEN-003 vacuum gauge and fitting for the venturi so you can monitor the vacuum being pulled. This would allow you to set up your system and get everything dialed in without guesswork. www.infinitytools.com/1-5-vacuum-gauge-w-brass-fitting-for-venturi-system
How loud is this tool? I would like to use it to draw down a 10" diameter vessel
+David Kosh The volume depends on the output pressure of your air compressor. The higher the pressure the higher volume of air and the louder the switch. At 80psi I would say the venturi is not so loud as to require hearing protection but it is not what I would consider quiet either.
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