Edwards 1 E2M1 whats the rating on this? 1 micron????

Im looking at this pump and it retails for $2000 http://sandiego.craigslist.org/csd/tls/4023436474.html


from what i can tell from trying to use conversion tables and reading as much as possible is that it pulls down to 1 micron area, and displaces .75 cfm???

Can anyone tell me if this would be a good buy for $200?
from what i cant tell it is, but the only thing that scares me is the .75 cfm

[TABLE="width: 1"]
[TR]
[TD]Displacement (swept volume)[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]50 Hz[/TD]
[TD]1.8 m[SUP]3[/SUP]h[SUP]-1[/SUP] / 1 ft[SUP]3[/SUP]min[SUP]-1[/SUP][/TD]
[/TR]
[TR]
[TD]60 Hz[/TD]
[TD]2.2 m[SUP]3[/SUP]h[SUP]-1[/SUP] / 1.3 ft[SUP]3[/SUP]min[SUP]-1[/SUP][/TD]
[/TR]
[TR]
[TD]Speed (Pneurop 6602)[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]50 Hz[/TD]
[TD]1.6 m[SUP]3[/SUP]h[SUP]-1[/SUP] / 0.8 ft[SUP]3[/SUP]min[SUP]-1[/SUP][/TD]
[/TR]
[TR]
[TD]60 Hz[/TD]
[TD]2.0 m[SUP]3[/SUP]h[SUP]-1[/SUP] / 1.2 ft[SUP]3[/SUP]min[SUP]-1[/SUP][/TD]
[/TR]
[TR]
[TD]Ultimate vacuum (total pressure)[/TD]
[TD][/TD]
[/TR]
[TR]
[TD] without gas ballast[/TD]
[TD]3 x 10[SUP]-3[/SUP] mbar / 2.3 x 10[SUP]-3[/SUP] Torr[/TD]
[/TR]
[TR]
[TD] with gas ballast[/TD]
[TD]2.5 x 10[SUP]-2[/SUP] mbar / 1.9 x 10[SUP]-2[/SUP] Torr[/TD]
[/TR]
[TR]
[TD]Inlet connection[/TD]
[TD]NW10 flange[/TD]
[/TR]
[TR]
[TD]Outlet connection[/TD]
[TD]Nozzle 11 mm external diameter removable from hole tapped 3/8 inch BSP[/TD]
[/TR]
[TR]
[TD]Maximum permitted pressure at outlet[/TD]
[TD]0.5 bar gauge / 7 psig[/TD]
[/TR]
[TR]
[TD]Maximum inlet pressure for water vapour[/TD]
[TD]15 mbar / 11 Torr[/TD]
[/TR]
[TR]
[TD]Maximum water vapour pumping rate[/TD]
[TD]16 gh[SUP]-1[/SUP][/TD]
[/TR]
[TR]
[TD]Motor power 50/60 Hz (IP54)[/TD]
[TD]0.16 kW[/TD]
[/TR]
[TR]
[TD]Nominal rotation speed 50/60Hz[/TD]
[TD]2800/3400 rpm[/TD]
[/TR]
[TR]
[TD]Power connector[/TD]
[TD]IEC EN60320 C13[/TD]
[/TR]
[TR]
[TD]Operating temperature range[/TD]
[TD]12 - 40 °C[/TD]
[/TR]
[TR]
[TD]Weight[/TD]
[TD]10 kg / 22 lbs[/TD]
[/TR]
[TR]
[TD]Noise[/TD]
[TD]54 dB (A) @ 50 Hz[/TD]
[/TR]
[TR]
[TD]Oil capacity - max[/TD]
[TD]0.28 litre[/TD]
[/TR]
[TR]
[TD]min[/TD]
[TD]0.2 litre[/TD]
[/TR]
[TR]
[TD]Recommended oil (supplied)[/TD]
[TD]Ultragrade 15[/TD]
[/TR]
[/TABLE]


https://www.edwardsvacuum.com/Products/View.aspx?sku=A37132919

it also has a anti suck back valve, or i can buy a yellowjacket superevac9 retails for 400.

if anyone has any input im going to look at it at in 6hrs

yeti5508 said:

it also has a anti suck back valve, or i can buy a yellowjacket superevac9 retails for 400.

if anyone has any input im going to look at it at in 6hrs

Click to expand...

please anybody im just stumped, th yellowjacket is in a pawshop and they clsoe @ 6 and the person with the edwards isnt available till 6..

which pump am i better off with

http://sandiego.craigslist.org/csd/tls/4029484430.html
yeloow jacket


http://sandiego.craigslist.org/csd/tls/4029484430.html

yeti5508 said:

please anybody im just stumped, th yellowjacket is in a pawshop and they clsoe @ 6 and the person with the edwards isnt available till 6..

which pump am i better off with

http://sandiego.craigslist.org/csd/tls/4029484430.html
yeloow jacket


http://sandiego.craigslist.org/csd/tls/4029484430.html

Click to expand...

Well I bought the Edwards pump it pulled full vac, now to try it in the morning.

It will work, but one cfm is pretty small and there is no need to pull to one micron. In fact, THC is boiling below room temperature at that vacuum level.

Indeed, thanks for the heads up fade.

Will the cfm make.my purge time a lot longer?
Or just change the amount of time it takes to evac. My chamber?

Once you get the chamber evacuated, it would probably keep up. I'm considering a dual pump system for the Evapanator rotary evaporator, one to do the initial evacuation and one to pump the solvent laden fumes out when we cold boil.