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camplo
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Registered: 02/10/08
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AA 925X with twist valve
#21796807 - 06/12/15 10:30 AM (8 years, 11 months ago) |
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So I bought this and I am not sure if there is a proper way of using it.
 I'd assume that I would just enter contents and water, close valve after several minutes of steaming and then once pressure is reached adjust flame to hold constant pressure. Then after run time is up, remove from heat source. But I've heard of people not opening valve and it creates a vacuum, and somehow thats a benefit? Then later they slowly release the vacuum? I dunno.
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36fuckin5
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Re: AA 925X with twist valve [Re: camplo]
#21796872 - 06/12/15 10:50 AM (8 years, 11 months ago) |
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IDK man, I've never seen one like that. Maybe somebody modified it?
You should be able to buy normal parts for it.
-------------------- Pat The Bunny said: A punk rock song won't ever change the world, but I can tell you about a couple that changed me. bodhisatta said: i recommend common sense and figuring it out. These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.
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blojo02184
Big Red



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Re: AA 925X with twist valve [Re: camplo]
#21796886 - 06/12/15 10:54 AM (8 years, 11 months ago) |
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Yeah, im pretty sure you let it cool with the weight on so it does not drag air full of contamination into the pressure cooker and then the jars as they cool.
Basically your creating 2 vacuums, one inside the other, one in the jars in the pressure cooker and the other is the pressure cooker itself.
But im sure someone else will correct or better define the answer to your question.
Also, youll need that missing wingnut. Is that the sterilizer? Kinda seems to me to have some sort of attachment...
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36fuckin5
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Re: AA 925X with twist valve [Re: blojo02184]
#21796894 - 06/12/15 10:57 AM (8 years, 11 months ago) |
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I think someone had it running as a still at some point.
-------------------- Pat The Bunny said: A punk rock song won't ever change the world, but I can tell you about a couple that changed me. bodhisatta said: i recommend common sense and figuring it out. These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.
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camplo
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Re: AA 925X with twist valve [Re: 36fuckin5]
#21797095 - 06/12/15 11:45 AM (8 years, 11 months ago) |
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there is no weight on this one, The pressure is controlled by the twist valve. I've heard of people using them like this before, and commenting about creating a vacuum by shutting valve then cooling, but I don't remember what user that was. But ya, those are after market parts, which is why I wanted it. 100 plus shipping. I ordered a replacement wing nut too.
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Edited by camplo (06/12/15 11:46 AM)
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36fuckin5
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Re: AA 925X with twist valve [Re: camplo]
#21797185 - 06/12/15 12:08 PM (8 years, 11 months ago) |
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That's not the valve most people are talking about. Buy a normal valve and hope they didn't drill that thing out.
-------------------- Pat The Bunny said: A punk rock song won't ever change the world, but I can tell you about a couple that changed me. bodhisatta said: i recommend common sense and figuring it out. These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.
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Jenn
Supreme Leader



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Re: AA 925X with twist valve [Re: 36fuckin5]
#21797436 - 06/12/15 01:05 PM (8 years, 11 months ago) |
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Quote:
36fuckin5 said: That's not the valve most people are talking about. Buy a normal valve and hope they didn't drill that thing out.
That's what I would do. However, it truly does make one wonder why they used that one!
-------------------- Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.
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camplo
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Re: AA 925X with twist valve [Re: Jenn]
#21799792 - 06/12/15 09:51 PM (8 years, 11 months ago) |
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Its a continuously variable on/off valve, no need to replace it, I say. If it works, why mess with it. Its unique.
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ShroominMe
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Re: AA 925X with twist valve [Re: camplo]
#21800178 - 06/12/15 11:41 PM (8 years, 11 months ago) |
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Give it a shot and use sterilized indicator tape to make sure you have a good sterilization.
I have a 'vintage' AA pc and love it, despite its quirks
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camplo
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Re: AA 925X with twist valve [Re: ShroominMe]
#21824914 - 06/18/15 06:26 PM (8 years, 10 months ago) |
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Soooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo I got my pc and it has a twist shut off valve and the gauge goes to 60 psi...... how high of pressure can you run these things?
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GreenRabbit
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Re: AA 925X with twist valve [Re: camplo]
#21824942 - 06/18/15 06:30 PM (8 years, 10 months ago) |
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Quote:
camplo said: Its a continuously variable on/off valve, no need to replace it, I say. If it works, why mess with it. Its unique.
Yep, looks pretty legit too. That's coming from an engineer.
Run it and tighten it to get to 15 psi, see how it works.
Edit: Is that black handle attached to the lid just for lifting it off? Cuz that's pretty awesome too
Edited by GreenRabbit (06/18/15 07:05 PM)
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camplo
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825058 - 06/18/15 07:00 PM (8 years, 10 months ago) |
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Thanks, I thought some of you guys ran yours at 20 psi?
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Edited by camplo (06/18/15 07:01 PM)
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Juiceh
Dabbing All Day


Registered: 09/25/12
Posts: 3,208
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Re: AA 925X with twist valve [Re: camplo]
#21825075 - 06/18/15 07:05 PM (8 years, 10 months ago) |
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Quote:
camplo said: Soooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo I got my pc and it has a twist shut off valve and the gauge goes to 60 psi...... how high of pressure can you run these things?
Moar pics!!! Is that a stock Excess Pressure Relief Valve? They say that these AAs are tested over 200psi... I run mine at 20psi. I wonder how high the previous owners ran it and what they used it for.
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bodhisatta 
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Re: AA 925X with twist valve [Re: ShroominMe]
#21825077 - 06/18/15 07:06 PM (8 years, 10 months ago) |
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Quote:
ShroominMe said: Give it a shot and use sterilized indicator tape to make sure you have a good sterilization.
I have a 'vintage' AA pc and love it, despite its quirks 
in the industry that tape is just use to show something went into the sterilizer and is sterilized that's all not to verify how good sterilization was. the tape is shit basically, it's only for places where you would want to know if a load has or has not been through the autoclave. there's biological indicators to actually verify sterilization and they're quite expensive and a pain in the ass to use. you have to actually incubate the indicator to verify if anything was viable after sterilization.
I'd be wiling to bet if you took a tea kettle and put some of that tape by where the steam comes out the whistle it would change color in less than 15m.
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GreenRabbit
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Re: AA 925X with twist valve [Re: camplo]
#21825086 - 06/18/15 07:09 PM (8 years, 10 months ago) |
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Quote:
camplo said: Thanks, I thought some of you guys ran yours at 20 psi?

idk. But most PCs that come with a weight are designed to run at 15. Mine does and I have no way of adjusting pressure without getting a different weight (which I'm not sure they make). The gauge also only goes to 20 and then says caution.
Yours going to 60 makes me curious how high people have run it, but I wouldn't suggest taking it as high as the gauge goes, it's probably an aftermarket gauge as well.
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bodhisatta 
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825096 - 06/18/15 07:11 PM (8 years, 10 months ago) |
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an AA can easily do 20. and 60 but I wouldn't do 60. beer kegs are 10 times thinner the valve is way less heavy duty than the seal on an AA and they hold 60 before the safety plug fails,
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Juiceh
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825099 - 06/18/15 07:13 PM (8 years, 10 months ago) |
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60psi steam would be 307f!
Edited by Juiceh (06/18/15 07:14 PM)
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camplo
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825114 - 06/18/15 07:15 PM (8 years, 10 months ago) |
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The comment about AA's being tested 200psi is pretty reassuring. Ain't no telling what I'd try to do....25 would seem fine. 30 sounds nice. If the over pressure relief valve allows I guess...What happens when an AA over pressure valve goes off? Does it automatically reset?
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Edited by camplo (06/18/15 07:18 PM)
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bodhisatta 
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Re: AA 925X with twist valve [Re: Juiceh]
#21825137 - 06/18/15 07:21 PM (8 years, 10 months ago) |
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Quote:
Juiceh said: 60psi steam would be 307f!

exactly so while it can handle the pressure the question becomes can it handle the pressure and heat
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Juiceh
Dabbing All Day



Registered: 09/25/12
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825139 - 06/18/15 07:21 PM (8 years, 10 months ago) |
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Quote:
GreenRabbit said:
Quote:
camplo said: Thanks, I thought some of you guys ran yours at 20 psi?

idk. But most PCs that come with a weight are designed to run at 15. Mine does and I have no way of adjusting pressure without getting a different weight (which I'm not sure they make). The gauge also only goes to 20 and then says caution.
In order to go from 15psi to 20 psi with an AA PC you need to ad ~40g of extra weight somewhat symmetrically to the existing weight.
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GreenRabbit
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Re: AA 925X with twist valve [Re: camplo]
#21825142 - 06/18/15 07:22 PM (8 years, 10 months ago) |
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I think it would shoot out of there if it does... Maybe just a side would pop out first and you'd lose pressure.
No, I doubt it would reset itself.. But that would be easy, if it doesn't fly off behind the stove. lol
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Juiceh
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Re: AA 925X with twist valve [Re: bodhisatta]
#21825150 - 06/18/15 07:25 PM (8 years, 10 months ago) |
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Quote:
bodhisatta said:
Quote:
Juiceh said: 60psi steam would be 307f!

exactly so while it can handle the pressure the question becomes can it handle the pressure and heat
The cooker probably would, I'd be more concerned about what that heat does to what you're sterilizing.
Edited by Juiceh (06/18/15 07:25 PM)
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bodhisatta 
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Re: AA 925X with twist valve [Re: Juiceh]
#21825154 - 06/18/15 07:26 PM (8 years, 10 months ago) |
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nothing much most things are cooked at 350 or higher anyway.
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blindingleaf
blue collar underworld


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Re: AA 925X with twist valve [Re: bodhisatta]
#21825173 - 06/18/15 07:32 PM (8 years, 10 months ago) |
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even if ur PSI gauge and steam release are mounted on the same exhaust, it will still work as a PC the way u described in ur OP. its all part of the same system, as u pull back and tighten the twist handle, the gauge will slowly read the rise in pressure. home built low pressure barrels work in a similar way, except they use mercoid units to read the pressure, but both the PSI gauge and steam exhaust are mounted from one opening.
not sure about slowing it on cool down, it will form a vacuum if u close it while hot. i know some people who open their PC's at 1 PSI so nothing gets sucked in. if ur just using jars with filters, u don't need to worry about it either way.
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GreenRabbit
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Quote:
blindingleaf said: i know some people who open their PC's at 1 PSI so nothing gets sucked in.
Thats funny, cuz atmospheric pressure isn't 1 psi. The problem is that the gauge can't read negative pressure (mine has a stopper on the needle) so when it reads 0 it is actually lower.
Why open the PC while its hot?
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Juiceh
Dabbing All Day



Registered: 09/25/12
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Re: AA 925X with twist valve [Re: bodhisatta]
#21825190 - 06/18/15 07:38 PM (8 years, 10 months ago) |
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Quote:
bodhisatta said: nothing much most things are cooked at 350 or higher anyway.
Right but some autoclavable things might not withstand the extra heat.
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bodhisatta 
Smurf real estate agent


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Re: AA 925X with twist valve [Re: Juiceh]
#21825195 - 06/18/15 07:40 PM (8 years, 10 months ago) |
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PP plastic sure wont.
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Juiceh
Dabbing All Day



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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825208 - 06/18/15 07:44 PM (8 years, 10 months ago) |
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Quote:
GreenRabbit said: The problem is that the gauge can't read negative pressure (mine has a stopper on the needle) so when it reads 0 it is actually lower.
Do you have an AA? If so the 0 mark should be a couple millimeters above the needle stop and under no vacuum or pressure the needle should hover above the stopper. When there is vacuum the needle pulls down and rests on the stopper. So it doesn't tell you how much vacuum its pulling, but you can get an indication of whether or not there is a vacuum from the gauge.
Edited by Juiceh (06/18/15 07:45 PM)
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GreenRabbit
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Re: AA 925X with twist valve [Re: Juiceh]
#21825263 - 06/18/15 08:00 PM (8 years, 10 months ago) |
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No I have a Presto. That's cool that it can indicate underpressure. But I don't see a reason to open the PC while its hot just to avoid a vacuum. You have some type of filter on your jars anyway. You can't use anything while its hot so what's the point of opening it?
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NumeroEno
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21825434 - 06/18/15 08:40 PM (8 years, 10 months ago) |
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That's fuckin weird man. I'd replace that valve with the standard stopcock. It's like 35 bucks from AA. I second whoever said that thing was probably used as a still. That's def a 1925x that was modified. It would be a good idea to start with the stopcock, and then replace any other iffy parts.
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Let it grow! Let it grow! Greatly yield! What shall we say, shall we call it by a name As well to count the angels dancing on a pin Water bright as the sky from which it came And the name is on the earth that takes it in DOG FOOD AGAR MY ELECTRIC INOCULATION LOOP
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camplo
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Re: AA 925X with twist valve [Re: NumeroEno]
#21825678 - 06/18/15 09:34 PM (8 years, 10 months ago) |
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Well, I have a a measurement for vacuum on mine....
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GreenRabbit
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Re: AA 925X with twist valve [Re: camplo]
#21825795 - 06/18/15 10:03 PM (8 years, 10 months ago) |
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Fucking sweet. I wouldn't try to replace any parts, that thing is amazing.
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camplo
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Re: AA 925X with twist valve [Re: Juiceh]
#21825825 - 06/18/15 10:10 PM (8 years, 10 months ago) |
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Quote:
Juiceh said: Right but some autoclavable things might not withstand the extra heat.
Word, PC won't go over 275 and I could get my hands on some PMP which can handle 370. But whatever the over pressure valve is set to is the deciding factor. There's numbers on it but I can't make out any thing that suggest spec.
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Edited by camplo (06/18/15 10:11 PM)
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camplo
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Re: AA 925X with twist valve [Re: camplo]
#21837658 - 06/21/15 03:49 PM (8 years, 10 months ago) |
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Well the over pressure valve is set to 23psi if anyone was wonder. Its not a stock part but its stock setting.
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GreenRabbit
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Re: AA 925X with twist valve [Re: camplo]
#21838379 - 06/21/15 06:40 PM (8 years, 10 months ago) |
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Right where you want it isn't it?
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camplo
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Re: AA 925X with twist valve [Re: GreenRabbit]
#21839653 - 06/21/15 10:22 PM (8 years, 10 months ago) |
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Well suuuure it is....I'd be lying if I said I didn't google over pressure relief valves to see what my options where lol.
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blojo02184
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Re: AA 925X with twist valve [Re: camplo]
#21840718 - 06/22/15 06:02 AM (8 years, 10 months ago) |
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So they dont make a weight to hold 20psi on an AA?
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