Fermzilla Dump Valve Adaption?

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christian86

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so, I have the fermzilla for a time now, never liked that colector jar, and now I broke it, and dont wanna buy another one, so I have some questions
saw this on the internet, but think is a fermentassaurus

1618084527634.png

I wanaa fo something similar with fermzilla

Have anyone found any way of improvising a real dump valve like the photo? so you can colect trub/yeast without all that screwing?

1618084076402.png

any way of ataching a part like this one?

the other thing Im thinking is, do someone have the actual dumension of the colecting jar thread? So maybe I could 3D print a part that could have the same thread of the colector jar but it is a cone with a 90º tybe with tri clover at the end

to me its much more obviously something like this instead of that jar

have anyone already have a project like this that could be shared?

thanks
 

DuncB

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That is a fermentasaurus I can confirm.
I haven't ever got my hands on a fermzilla so can't offer advice re your problem.

Any way to fit a bulkhead connector onto you broken fermzilla jar ( not sure how it has broken ) then you can fit tri clover stuff on.
 
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christian86

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the jar broke on the cap threads (too much screwing and unscrewing with unecessary strengh)
thing is, the thread of the jar is 4.5", the inner thread seems smaller, though I can't verify that now because Im fermenting on it right now. I searched for 4.5" bulkheads and reductors to fit the jar spot, found a firehose on 4.5" but it really expensive, and its risky because I dont even know if thethreads are NPT, BSP or even worse
I didnt quit yet, I'm looking on 3D printm but to start to make the project I'll need the size of the partsm the thread twist size...
For the looks, fermentassaurus seems to have smaller lid and dump valve, so its probably easyer to find something that fits and hold the wort and pressure

Thanks anyway, and if something comes in mind, please share
cheers
 

DuncB

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I didn''t have much luck when I contacted Kegland about the thread type on the top of the fermentasaurus, so I doubt they will be particularly forthcoming about the fermzilla thread.

Maybe an engineer can work it out for you, it's unlikely that they developed a unique thread. Then there will be a source for an alternative somewhere. 3d print forum might be able to scan the thread perhaps. But if you found out the spec easier to get the 3d print done or the off the shelf.
Will await your updates.
 
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christian86

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thanks for the tips, and do you know any 3D forums where I could ask for help? already though about object scanning, but having troubles finding a good free software (will search a little more, if you have one good name for me...)
I was suprise about the quality of 3D print I saw on some videos, thread printing wont be a problem, though have to be a good project...
so I painted white my colector jar (its broken, so its useless anyway) read that scaning transparent objects can get a little tough, took some photos circulating the jar, put in meshroom program but didnt get much from it yet...

this is the project, the not the final, just to see if I could project something like this, threads werent measured. upper size ir 4,5", down is 1", thinking if it is worth putting another 1" conection on the side
thinking on how thinck should be the walls for sustaining pressure, this model is 3mm
thinking about the material, gonna see what type of plastic can be used in 3D print
I will need to scan the female thread to be sure of the fitting
 

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DuncB

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@christian86
I don't know any forums, just have to search and try some for advice. Maybe a company doing commercial 3d prints might be able to help.
I think that you should go bigger with that lower hole. Perhaps just go the whole hog and 3D print it to take 1.5 inch triclovers.
 

apache_brew

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Is this the assembly you have?
If so, why don’t you wanna buy another collection jar? Has anyone successfully 3D printed parts to touch beer and be reusable (cleanable/sanitized)?
C3D906FE-9B7A-4349-B535-D4DF7CE157CC.png
 

DuncB

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@christian86
If you do find out about printing threads, I'm interested in a 3d printed lid for the petling bottle that the ispindel goes in.
Had one leak under minimal pressure and it's now sank in the beer and is partly obstructing the outflow of the fermentasaurus. Grrrr.
Also as the lid deforms under pressure it sends the readings haywire.
 
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christian86

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Im trying to use meshroom for photogrametry since its free, It takes loooongs times to transform Photos into 3d, so I tested few times, not entirely succesfull, but alrrady see it could be done, maybe its my photos quality, light... Its says It have dificulty on thin objects, so maybe I fill It with papper or socks
Also, If 3d print its not suitable for pressure, I guess I can send to usinate in polypropilene ir another sanitary plasticor even inox, in inox could vê a little more expansível than buying the original colector, talk abaout converting dollars to brasil real...

Apache_brew, yes, this os the set I had, I live in brasil and buying one replacement its not cheap, and for something that proves to be fragile and not very practical for me... And a 3D printed piece should be much more cheaper and way faster to reach my hands. A cone and a valvr would be way more usefull, since It would be much more easy to separate trub, Young yeast/good yeast/old yeast, gelatina, etc, without screwing/unscrewing, testing for leaks... A cone and a valvr, on humana measuremnts (not unique 4,5" shape). Way I think, eorked some years on beber industry, and if beber industry uses a cone and a valve Works wide, its probably because its the best practical choice, even though its diferent scale.

DuncB, I serached for 3d pronta on yhe internet and round some vídeos with Very good quality screw, só its doable, anoyher search and I see that its possível to do the schematics in Autodesk inventor, (maybe SketchUp?) On inventor there is alll kinds of ththreads sizes in inches or cm, npt/não/nbsp/etc, Im still lrarning but tou can find tutorials on youtube
 

DuncB

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@christian86
Thanks for the reply.

I will start looking into this over here and see what I come up with.

I was all over the fermzilla when first announced but thankful that I didn't leap on the bandwagon after all the issues there seem to be.
 
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christian86

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Thing is, buying an pet keg could prove to be almost the same, if you change the siphoon for a floating dip, but way more cheaper

I've manage to do some photogrametry and a little cleaning, but it is still raw material, most because my lack of experience and equipment for taking a good photo to be processed in meshroom and then treated on blender.
I searched a little about what kind of plastic is used on 3d print, there is one PETG, that probably is suited for this project (food grade, pressure, temperature and chemical maybe)
I tried to atach the progress so far here, if anyone wants could use it somehow, but the files are too bigm maybe if I generated a google drive link, gonna see this later. Im gonna ask for my brother help, he knows how to use skecthuo and CAD and these 3d programs

*Edit - Link for the 3d .dae potogrametry of th colector

 
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christian86

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so, I imported the 3d scan to autodesk inventor but it got a LOT of feometry to adjust, and since my skills and equipment for a 3d photogrametry is poor, the model came into inventor with a lot of imperfections to reconstruct, though it would be something close to insanity trying to solve that, so I move to create from zero...
Measuring all dimensions as close as I can and a little learning and I think I got something here...
the thread that conects with the fermzilla valve piece its a Buttress type, and the thread is a double start thread (this one I missed on the first model attempt)

specifications:

Cone angle is 60º (or something really close to taht)
I added an extra thickness to the walls (maybe it will resist higher pressure?)
Made the lower thread a 1/2 BSP non-conical, mostly because the 304 valve and knee I have is a 1/2, if I get a trub/yeast stucking I can just close the fermzilla big valve and stick a wire or something to clear the way.
And because of the extra thickned walls the inside dimension should be different from the standart BSP, but the important is the outside thread dimension, that I made as the standart table informs
Added a "gear" just bellow the upper thread, so it could helo whit screwing/unscrewing when mounting or dismounting

Even though it proves it cannot hold pressure, it could be used only during non pressurized fermentation step, and if you want to hold pressure just close the big fermzilla valve (but lets hope it holds pressure ;-) )

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IMPORTANT!!

I didnt 3d printed this yet, so I really dont know if it will fit and not leak, or resist pressure or anything, so I dont wanna be responsible for any damage to anyone fermenter, extra care when messing with pressure

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Also, dont wanna see someone picking this project and proffiting on my work

I think its gonna be some time untill I could send this to a 3d printer service to really test it, so if anyone test before me, le us here knows the results

Maybe in some near future we could project anotherfermzilla lid, one that makes sense! hehehe

Link to colectorcone aautodesk inventor drive file

Cheers!
 

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