https://www.swagelok.com/en/catalog/Product/Detail?part=SS-4F-05
SS-4F-05 (1/4”)
SS-6F-05 (3/8”)
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Been having issues with pour spout causing nucleation on one of our units. We do a pour off with our other unit and very very rarely see sugaring but as soon as it goes through our pour spout issues begin to arise. I fully clean the pour spout and blast 60psi nitro through after to ensure there is no debris causing the problem. Do you think this could help solve that issue?
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do you clean you valve/ spout each and every time? Seed crystals like to hang out in there.
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We clean the portion of the valve thats not under pressure or in contact with solute as well as the spout that attaches to the swage valve every single run. We also clean hemis, lines, collection pot, valve and spout at end of each day and still see sugar on the first run sometimes. Material is binned out and air dried with fan for 48hrs before being packed. I feel like i’ve been through every variable possible and still cant figure it out. Read and commented on several threads about this and thats the main variable thats different. Any help or ideas are accepted and greatly appreciated.
how much pressure does the pot have when you are pouring slabs?
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Fromundaseeds
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Thanks for the replys guys! We pour off with less then 1psi and make sure to pull heat early so we don’t over heat or over boil prior to pour. Oven temps are anywhere from 88f-92f for first pull. I don’t think its the ovens cause we use the same tech for both units and one produces sugar and the other doesn’t. At end of every night we put 4lb’s of solvent in both columns ramp pressure to 85psi using heated jackets and blasting through to clean lines and valves. Pour spout valve gets full detailed cleaning by hand using 200 proof ethanol then heated and pressure blasted to make sure its free of any debris. I don’t fully disassemble the valve but visually it appears to be fully cleaned.
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Sweet find there! Wouldn’t be hard to just t off above the valve in case of a clog. Yeah, I like it a LOT
Your pour procedure seems solid, what are you pouring onto if I may ask?
Has this been through a C.R.C of sorts?
My money would be on particulate matter triggering nuculation, adding more filtration like the inline @TheGratefulPhil linked may worth be trying. The other possibilitys could be the terpene content of the resin/oven temp. If the resin is especially terpy it can sugar due to the terpenes acting like a solvent, in a super saturated state the more time you stay there the more chances you have of forming a crystal. The name of the game with shatter is to rip anything volatile off the resin and lock it in a plastic state. What is your material like?
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Could this be used under vacuum for inline filtering of ethanol extract? Any idea of max flow rate? Thanks.
We typically run trim that is properly dried and stored when it comes in. We dry out the material even further in bins to ensure we have the least amount of moisture possible. It is definitely not overly terpy and slabs are very easy to manage by hand on first flip and continue to get easier after each day of purging. When we pour off the slabs are immediately taken to the oven and we let them sit for about 20-45min until they hit desired temperature. By locking in a plastic state do you mean let the slab stay in a muffin and crash naturally overnight ? We typically pull to full vac and let muffin crash out so oil can rest on heated shelf.
Some product is ran through CRC but only enough to create bright yellow slabs, these slabs typically come out more stable then stuff that isn’t ran through crc. These slabs usually are the ones with the least amount of sugaring issues. We always complete a crc wash and spray off a few fluid ounces to ensure we don’t have media in our extract (CRC is 1um sintered disc by AMP)
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Best way to keep that squirt valve/spout clean?
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Clean it after every run from both ends with solvent of choice.
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Rule of three. Clean it once. Then clean it again. Now it is clean. So clean it again.
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Have you ever opened or closed a valve that wasn’t hooked up to anything but previously used and it had a tiny bit of pressure trapped in the valve so it made a quick hiss? That small gap can trap vapors as well as sugars. More than likely that’s where the source is coming from. Even if you clean it, it’s hard to reach back there so its possible some micro sugars get left behind and even the smallest crystals will cause nucleation. I usually soak my valve in ethanol, pull it out and move the valve handle, then let it soak a bit more. The slabs that sugared up can be redissolved and you can go for shatter again once you fix the issue.
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How is it spraying out? Are you reducing the solvent down to emit as little pressure as possible so that it just falls through the spout? Also are you cracking the spout and it’s spraying out, or is it coming out like foam.
Personally, I’m not a fan of the spout for slabs for that same reason, but that’s just my personal opinion.
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We reduce just enough for the oil to fall from the spout as a liquid and foam as it his the sheet with enough solvent to spread the slab a bit. I felt like when we reduced too far it caused more agitation coming out of the spout. Currently using a 70:30 blend nbutane:propane. The end of the spray off seemed to cause sugar nearly every time.