what is the best vacuum pump for BHO purging?
- Thread starter vapedup
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vapedup
Well-Known Member
Thanks homie! What do u think of this one?
http://www.amazon.com/gp/aw/d/B001P7C7QM/ref=ox_sc_sfl_image_3?ie=UTF8&m=ATVPDKIKX0DER
http://www.amazon.com/gp/aw/d/B001P7C7QM/ref=ox_sc_sfl_image_3?ie=UTF8&m=ATVPDKIKX0DER
Fadedawg
Well-Known Member
On the other hand THC boils at relatively low temperatures in a vacuum. See attached graph, compliments of Skyhighler:
I used to use -29.9" Hg, but have backed off to -29.5" Hg to preserve them. Anything in the micron range would require super chilling the THC to preserve it.
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Dan Kone
Well-Known Member
That is also a good point. However 29.5 isn't going to give you a complete purge, you're still going to have to use heat where you're going to lose some anyways. Tuff call...
Fadedawg
Well-Known Member
Why won't -29.5" Hg completely purge the oil at 115F? Ours has no detectable solvent and smells like the material it was extracted for.
Fadedawg
Well-Known Member
Robinair makes a decent pump and 8cfm is certainly a handy size. You don't need a two stage, but it will work fine. We use a Robinair 15500 5 cfm two stage for some of our stuff.
Dan Kone
Well-Known Member
Vac oven?
I don't have an oven. I purge, then heat usually for several hours.
IDK. I think you have a good point though. Seems like you'd pull terpenes at 30. But am I pulling more by heating?
Fadedawg
Well-Known Member
Our vacuum purges leave more flora flavor than purging by just heat used to do. The oil that we fully purge and decarboxylate using only heat, mostly has a hashy flavor.
would a 14cfm Lab grade pump be overkill?
http://www.pchemlabs.com/product.asp?pid=3926
found one for 500 used. Would this be doing too much?
http://www.pchemlabs.com/product.asp?pid=3926
found one for 500 used. Would this be doing too much?
vacpurge
New Member
yup its overkill. you only need like a 98% vacuum @ approx 100f so its not like you need a perfect extreme vacuum.... even the cheap harbor freight pumps will make shatter, wax, whatever you want. and theyre only like 80$.
some guys achieve full vacuum... and then BURP fresh air back into the chamber for a second.. thus decreasing the vacuum by just a tiny bit. full vacuums can pull terps (flavor) and THC out of the oil if you got too much heat. even on a very hot summer day... a full vacuum for too long of a time can suck terpenes and THC from the oil.
so, long story short... buy a cheap pump. they work just the same, if not better.. just a hair louder and maybe 50% longer to achieve vacuum. 2 mins extra. big deal!
that pump does look pretty damn bad ass though. but its the bud you start with, not the tools you got.. for the most part.
some guys achieve full vacuum... and then BURP fresh air back into the chamber for a second.. thus decreasing the vacuum by just a tiny bit. full vacuums can pull terps (flavor) and THC out of the oil if you got too much heat. even on a very hot summer day... a full vacuum for too long of a time can suck terpenes and THC from the oil.
so, long story short... buy a cheap pump. they work just the same, if not better.. just a hair louder and maybe 50% longer to achieve vacuum. 2 mins extra. big deal!
that pump does look pretty damn bad ass though. but its the bud you start with, not the tools you got.. for the most part.
2Kushed
Active Member
Yes, it would. Buy a good American made 7-8cfm for that much. Try Amazon or Ebay for JB or Yellow Jacket. Get one that is easy to change the oil!
Fadedawg
Well-Known Member
14cfm, two stage, and $500 are all three overkill for the purpose.
openhorizon
Active Member
I went with a 6 CFM, 2 stage by JB. Buy American!! Works great. Paid 300 which was paid off with my first bho run with it.
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