www.TK560.com

mr2monster · Newbie Joined: 05 May 2007 Posts: 22

I found a Thomas 2807CE72-59G pump for sale locally for $50. The guy says it works great and it appears to be in decent condition according to pictures. (haven't heard it run yet). my quesiton is this: I'm looking for a pump to get me started and this pump has the ability to pull 25" of merc. and flows 6cfm (naturally degrading the stronger the vac) but since I'm completely new to the world of vacuum would this be a good pump for a 2 stage setup? I'll be coupling it with 2 10 Gallon holding tanks or possibly a custom tank idea that I have.

Cliffs: Thomas 2807CE72 for $50 bucks. yes? no? and why?

Great site, thanks for the help in advance.
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mr2monster · Newbie Joined: 05 May 2007 Posts: 22

In case you guys dont know of the pump here are the specs:

Model:2807CE72
HP:1
Motor Capacity: Voltage:115/60; Type PSC
Vacuum Performance (CFM @ in.HG):
0:6.60cfm; 5:3.60cfm, 10:2.66cfm, 15:1.80cfm, 20:0.88cfm
Vacuum (in.HG): Max 25, Retart 0
Electrical Rated Load:
Run:8.5 amps
Power: 902 Watts
Start: 44 amps
Speed: 1700RPM
Thermal Protector: Yes
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drcrash · Posted: Wed May 09, 2007 12:18 pm Post subject:

That would be a dandy pump. I use a Thomas with about half the CFMS. Thomas is one of the two big names in vacuum pumps (outside the refrigeration world), the other being Gast, and they make good pumps.
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jegner · Posted: Wed May 09, 2007 6:50 pm Post subject:

Welcome to the board.

I don't know a lot about pumps, Stomper 'Tony' is my go-to-guy for all things vacuum related. I'd say that at that price, you would be hard to go wrong! A 6CFM pump that goes to 25 in/hg? Hard to pass on that, even if it's not a Gast!

Jim

mr2monster · Newbie Joined: 05 May 2007 Posts: 22

well, i went and picked up that pump tonight.... I also got a 5 gallon tank that it had been used with (although I'm not sure what for). I took a guage to make sure that it was pulling vac and it seemed to work great and it looks brand new! I guess we'll see if it was worth it.

Oh, i also talked the guy down to 30 bucks including the tank Wink

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Stomper · Posted: Wed May 09, 2007 10:59 pm Post subject:

HA HA!!! We have a PIRATE among us!! Looks like you got a SMOKIN' DEAL!!!
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Tony Krewson
FEAR... is not my god!!

Plasticman · Expert Joined: 08 Jul 2006 Posts: 109

thats a good deal. Depending on what your doing, you may need a bigger tank though.

mr2monster · Newbie Joined: 05 May 2007 Posts: 22

Everwolf · Posted: Fri May 11, 2007 7:54 am Post subject: What about

I am looking at getting a Gast 1023 vacuum pump.

MODEL 1023 SERIES
26" HG MAX. VAC., 10.0 CFM OPEN FLOW
10 PSI MAX. PRESSURE, 10.0 CFM OPEN FLOW

Would this be ok for a 24x32 table or 22x30 platen?

Also looking a a multi-tank configuration think 4 10 gallon tank or would one 40 gallon tank be better?
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jegner · Posted: Fri May 11, 2007 8:01 am Post subject:

The 1023 is an alternate to the Gast 1065. IIRC the 1023 has the motor attached. It won't pull down to the microns, but should yield great results. a 30-40 gallon tank is easier to plumb, and will end up costing less than 4 10 gallon tanks, and all the plumbing hardware needed to make them work.

IMHO, YMMV

Jim

Stomper · Posted: Fri May 11, 2007 8:03 am Post subject:

10-CFM should be quite adequate for a 24 x 32 platen! Hint: You don't have to EVEN come close to pulling vacuum down into the micron scale for vac-forming. Microns are getting close to "outer space" vacuum levels and is required in refrigeration to boil off non-condensables such as water from refrigeration piping.

Multiple tanks should work just the same as one large tank if you plumb them together properly with large enough pipes. I can see how you could possibly save space with "bundled" smaller tanks over one "Large Marge". Wink

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Tony Krewson
FEAR... is not my god!!

cod · Posted: Fri May 11, 2007 11:04 am Post subject:

Stomper · Posted: Fri May 11, 2007 4:15 pm Post subject:

You don't.... ONE micron is one MILLIONTH of one inch.

Do a search for microns here on the forums, I've posted in a couple of threads (I believe) with a snazzy picture and a disertation on what vacuum is, how it's measured, and how it pretains to what we are doing.

Hope that helps.
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Tony Krewson
FEAR... is not my god!!