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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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Old School things - are better than some new things.
    #4532964 -

New AA PC's come with a weight, to regulate pressure.

Older AA PC's have a spring toggle switch, that regulates pressure.
Unless you release a spring toggle switch -manually- the switch does not release any STEAM - unless the PC overheats into the 24 / 26 psi range.

The significance of that is - the Old School AA PC's with - toggle switches - DON'T loose any water content - during a PC run, no matter the length of time it takes. :grin:

Conversely - PC's with weight regulators emit variable amounts of steam during a PC run, which can result in the PC running dry, before the run time - is complete. :mad2:

Just thought I would mention this aspect - to those who are PC shopping. They must be good, as all AA Sterilizers STILL come equipped with them, rather than weight regulators.


Old School AA PC pressure release toggles.


Toggles (2 for safety purposes)

You might wonder why people rave about the older AA 941 sterilizers.



They not only have 2 pressure release toggles. They also have a tight fitting insert pot. Meaning, the insert content does not come in contact with the PC's outer walls.

Consequent, heat & steam is evenly distributed & filter/patch bags -
cannot come in contact with the PC's outer wall &  melt apart. You can also remove a loaded insert, for faster content cooling, rather than remove individual jars - or bags.

So, IMHO - some of that old 60's stuff - is better than what is produced today.  :thumbup: :rolleyes: :grin:


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Re: Old School things - are better than some new things. [Re: agar]
    #4532969 -

I've got a little Presto I use for syringes, tools and lc's exc. That sumbitch eats water. It has the rocker type of weight. For a 90 minute run, it has to be filled quite a bit. Now my big boy has the toggles like yours. I can put about a 1/4 of an inch of water in it and it holds damn near all of it. Even after a long pc run for hours.

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Re: Old School things - are better than some new things. [Re: Hotnuts]
    #4532982 -

LOL, that old 941 calls for a single quart of water - in it. Longest PC run I have done was 3 hours. Sumbitch - still had that quart of water - inside it, when the 3 hours was up.



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Re: Old School things - are better than some new things. [Re: agar]
    #4534908 -

Thank you so much for that info! I was actually thinking the same thing the other day. I have a few AA electric sterilizers, the 925x and the 75x, both have those water saving pressure release toggles. Also one, the 925x has a broken heating element ( I know they're easy and chap to replace, but I haven't gotten around to it yet.), so I can take off the toggle and switch it with the regulator weight ( I gave an old AA to a friend and he changed out the top immediately, I wonder where he went to get it? ( He just picked it up in some store in Miami, if I remember correctly.)
I'll have to call WAF to get replacement parts I bet...
Thanks again, oh and the compost post was wonderful also.
Light and Love,
Jeremy Davis


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Jeremy Davis
Educational Concerns for Hunger Organization, Inc.
Check out the ECHO mushroom blog page to see our lab, growing facility, and more-www.echotech.org/greta

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Re: Old School things - are better than some new things. [Re: Jeremy_Davis]
    #4534952 -

If the hole width & threads match (I think they do), you sure can.

https://store.wafco.com/ezMerchant/products.nsf/ItemMasterLookup/p58?OpenDocument

http://store.sterilizers.com/emerchant/itemdetail.asp?pline=P-WISC&item=65


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Edited by agar (08/14/05 06:43 PM)

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Re: Old School things - are better than some new things. [Re: agar]
    #4535935 -

Could one replace the weight on AA 921 pressure cooker with this valve ?

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Re: Old School things - are better than some new things. [Re: fungusamongus]
    #4536104 -

I assume you could -if the hole width & threads match. You might email WAFCO & ask - if they are. I have never had an AA PC with a weight pressure regulator. So, I don't know.

It would seem to me - there would be no reason for WAFCO to retool the hole width & threads - between the two. So, I would wager - they are the same.


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Re: Old School things - are better than some new things. [Re: fungusamongus]
    #4536203 -

Yeah i was thinking the same about the tooling also but with today's CNC machines it really wouldn't be nothing more than an extra couple tools in the machine. But anyway i guess I'll order one and find out. All that jigger in gets on my nerves.

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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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