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TK 109
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Joined: 11 May 2007
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Location: Galena, Ohio
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 Posted: Sun Sep 07, 2008 7:20 pm Post subject: Gast 1065 Vacuum-Pump EQUIVILANT? |
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is there a vacuum-pump out there with the same specs as the 1065? if so, WHAT? i've been looking at sump pumps at home depot, and the have COMPLETELY different specs than this pump. gast uses CFM, and the sump pumps use a water variant. IS THERE A WAY TO CONVERT THIS? ideally, a sump pump would be stronger, because it is designed to suck water, not air... what have you guys used in place of the gast 1065??? 
i'm looking in at buying a pump system for my machine, so i can get better results...
thanks! 
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mnttech
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Joined: 04 Jul 2007
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Location: Aurora Colorado
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| Posted: Mon Sep 08, 2008 12:42 pm Post subject: Re: Gast 1065 Vacuum-Pump EQUIVILANT? |
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| TK 109 wrote: | | gast uses CFM, and the sump pumps use a water variant. IS THERE A WAY TO CONVERT THIS? |
CFM = Cubic feet per minute, or a flow of air
Inches H20 (I assume is what you are refering to) is an amount of pressure (or vacuum) (no flow)
So, unless I'm sound asleep (great possiblity) you are trying to compare apples and grapes.
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TK 109
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Location: Galena, Ohio
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| Posted: Mon Sep 08, 2008 1:43 pm Post subject: |
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what kind of sump pump could i use to get the same results as a GAST 1065 vacuum-pump?
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Indigogyre
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Joined: 04 May 2006
Posts: 47
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| Posted: Mon Sep 08, 2008 2:30 pm Post subject: Pumps vs. Wedges |
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Alex,
You are trying to use a water pump that is designed to opperate with the resistance of water to move air which has little resistance. If you run a sump without the water you will burn out the motor very quickly.
To my knowledge you can't convert a sump to operate as a vacuum pump.
MODEL 1065 SERIES
28" HG MAX. VAC., 8.5 CFM OPEN FLOW
1 cubic foot = 7.48051948 US gallons
8.5 CFM = 63.58441558 US Gallons
So you would need a sump that could flow a minimum of 64 gallons a minute to move an equavalent volume.
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TK 109
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Joined: 11 May 2007
Posts: 712
Location: Galena, Ohio
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| Posted: Mon Sep 08, 2008 2:43 pm Post subject: |
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hmm... ok, thanks man.
what kind of vacuum-pumps are out there that are similar to the 1065? i know harbor freght has (had?) one...
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jegner
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cod
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TK 109
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Joined: 11 May 2007
Posts: 712
Location: Galena, Ohio
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| Posted: Wed Sep 10, 2008 4:03 pm Post subject: |
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i like the JB pump. so, i'd just have to get a tank, check valve, and a guage with that, no additional parts to the motor itself? (like TJ says in his book with the 1065). in his book he said you had to get something else seperate to make the actual 1065 unit function. this one is all-in-one?
sorry, i'm a super-n00b when it comes to the pumps and stuff...  
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cod
Master
Joined: 05 Nov 2006
Posts: 322
Location: San Francisco
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| Posted: Wed Sep 10, 2008 7:54 pm Post subject: |
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that is correct , the units mentioned above are for portable HVAC work- so they are self-contained with a motor. I think the gast could come either with or without a motor. the HVAC style pump is much more common on ebay and craigs list because HVAC techs use em to clear ac systems or something.
i have a robinaire 15600. most of the hvac pumps are variations of this design.
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ahillworks
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Joined: 18 Nov 2007
Posts: 308
Location: Orlando FL
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| Posted: Wed Sep 10, 2008 11:35 pm Post subject: |
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| To give you an idea. When you see me forming the Covers on the video I did. That is using a RobinAir 15600 no tank. |
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clonesix
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Posts: 63
Location: california
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| Posted: Thu Sep 11, 2008 12:04 am Post subject: |
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If you are interested, I have a gast 1/4 hp vacuum pump that I will sell for $100 + shipping if you are looking for a pump. It pulls 26.5" hg. It is enough for a vacu-form, but not enough for a vacuum chamber, so I bought another pump and don't need this one
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TK 109
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Location: Galena, Ohio
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| Posted: Thu Sep 11, 2008 2:12 pm Post subject: |
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| clonesix wrote: | If you are interested, I have a gast 1/4 hp vacuum pump that I will sell for $100 + shipping if you are looking for a pump. It pulls 26.5" hg. It is enough for a vacu-form, but not enough for a vacuum chamber, so I bought another pump and don't need this one
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what do you mean it wouldn't work with a vacuum chamber? you can't use a tank to pull a vacuum on a vacuum-former? you could hook up just that motor to the platen, without a tank??
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ahillworks
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Joined: 18 Nov 2007
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Location: Orlando FL
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| Posted: Thu Sep 11, 2008 5:31 pm Post subject: |
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| clonesix wrote: | If you are interested, I have a gast 1/4 hp vacuum pump that I will sell for $100 + shipping if you are looking for a pump. It pulls 26.5" hg. It is enough for a vacu-form, but not enough for a vacuum chamber, so I bought another pump and don't need this one
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Where did you get those filters please do tell please do tell I like the way That looks!!!!! I have been wanting to redo my lines for awhile now! |
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clonesix
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Posts: 63
Location: california
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| Posted: Thu Sep 11, 2008 6:58 pm Post subject: |
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| ahillworks wrote: |
Where did you get those filters please do tell please do tell I like the way That looks!!!!! I have been wanting to redo my lines for awhile now! |
That is the way it came from ebay
TK109: by "vacuum chamber" I mean vacuum degassing chamber, and not vacuum reserve tank. At 26.5" Hg, this pump will work fine for vacu-forming, but you will need closer to 29" Hg to degas silicone RTV. For that, I purchased a Robinair dual stage refrigerant pump. |
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TK 109
Guru
Joined: 11 May 2007
Posts: 712
Location: Galena, Ohio
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| Posted: Thu Sep 11, 2008 8:22 pm Post subject: |
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| clonesix wrote: | | ahillworks wrote: |
Where did you get those filters please do tell please do tell I like the way That looks!!!!! I have been wanting to redo my lines for awhile now! |
That is the way it came from ebay
TK109: by "vacuum chamber" I mean vacuum degassing chamber, and not vacuum reserve tank. At 26.5" Hg, this pump will work fine for vacu-forming, but you will need closer to 29" Hg to degas silicone RTV. For that, I purchased a Robinair dual stage refrigerant pump. |
cool! be sure to reserve that....
what size tank would i need though? 30 gal? or do i even NEED a tank? 
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