Denster Posted December 11, 2013 Report Posted December 11, 2013 They will both establish vacuum but the dual stage will do it a few seconds faster. Quote
Members Dwight Posted December 11, 2013 Members Report Posted December 11, 2013 Anybody know which draws more vacuum? The single stage one(#98076) states 75 micron/ 10 Pascal, 2.5 cfm.The two stage one (#66466) states 25 mmicron/3 Pascal, 3 cfm. I would assume the single stage is more powerful? Just a tad slower on the cfm rating? They will for leatherwork purposes pull pretty much the same. This is a slightly technical answer: The maximum "inches of vacuum" would be roughly equal to the barometric pressure outside, around 29.92 inches for a typical day (1 atmosphere here on Earth). This would be, for example, how far the mercury would rise if you pull air out of the top of a tube whose lower end is in a pool of mercury. If you are in HVAC work, . . . the bigger one will be quicker to evacuate a larger system, . . . saving man hours, . . . yadda, yadda, yadda. For us, . . . sucking the air out of a bag and collapsing it on some ole dead cow hide, . . . either will do the job adequately, . . . the bigger one would probably work faster if you were making shoulder holsters for Ma Duces or Barret .50 cals. May God bless, Dwight Quote If you can breathe, . . . thank God. If you can read, . . . thank a teacher. If you are reading this in English, . . . thank a veteran. www.dwightsgunleather.com
Denster Posted December 11, 2013 Report Posted December 11, 2013 Dwight explained that pretty well. It is not the power of the pump that does the work for us but the column of air, which has weight, above the bag we have just established a vacuum in. That weight is about 18lbs/sqin give or take a bit depending on your location above sea level. Quote
Members longtooth Posted December 11, 2013 Author Members Report Posted December 11, 2013 thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. Quote
Members jackd942 Posted December 11, 2013 Members Report Posted December 11, 2013 thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. thank you all for your replies and it's definitely a V pump. I keep forgetting that. Old age and such. lol! Quote http://DavisLeather.blogspot.com http://Facebook.com/DavisCustomLeather
Members TXAG Posted December 11, 2013 Members Report Posted December 11, 2013 Dwight explained that pretty well. It is not the power of the pump that does the work for us but the column of air, which has weight, above the bag we have just established a vacuum in. That weight is about 18lbs/sqin give or take a bit depending on your location above sea level. It's actually 14.7psi at sea level...I think 18 would put you in a very deep hole in the ground or something... Quote
Denster Posted December 11, 2013 Report Posted December 11, 2013 Correct 14.7psi at sea level. Should have looked it up before I posted. Quote
electrathon Posted December 11, 2013 Report Posted December 11, 2013 This is sounding like an episode of the Big Bang Theory. TXAG is Sheldon and Denster is Leonard. Quote
Members Dwight Posted December 11, 2013 Members Report Posted December 11, 2013 This is sounding like an episode of the Big Bang Theory. TXAG is Sheldon and Denster is Leonard. Just as long as you don't try to tag www.dwightsgunleather.com as the financial sponsor. May God bless, Dwight Quote If you can breathe, . . . thank God. If you can read, . . . thank a teacher. If you are reading this in English, . . . thank a veteran. www.dwightsgunleather.com
Denster Posted December 12, 2013 Report Posted December 12, 2013 Hmmm! Never watched Big Bang Theory so I don't know whether to be amused, complemented or insulted? Quote
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