Kloakk said:

sloug said:

nothing is being replaced ONLY IF the pc is completely sealed air tight. the presto jigglers dont create a good seal. u might not hear air entering back in but, it is. you have to take into account the venting cycle which removes air from the chamber before closing the valve or presto weight and bringing up to temp.

regardless, the "unclean" air entering back in isnt even an issue

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Well, if I'm reading your post right, we are saying the same thing.

While the pressure drop nothing is entering the PC. After pressure is equalized temperature continues to drop and then unclean air is getting in the PC, is that what you're saying?

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BeefSupremeJr said:

good morning everyone.  too much to quote but i think everyone knows what we are talking about here.

1.  pc's "sucking" in dirty air isnt an issue.  ive seen a certain youtube sensation talking about that.  hes wrong.  that isnt how duders plates got tammed.  at no point does a pc suck in air but even if it did, check valve would allow it even if the jiggler didnt.  you open the whole vessel and expose it to "dirty" air anyway so the whole discussion seems moot and kindof illustrates a misunderstanding for the entire sterile process in general.

2.  grain doesnt expand in the pc after its cooked, it shrinks. (or compresses, rather) .  fill to the shoulder of the jar . the extra room is for agar and shake-ability; not expansion.

3. we cant be sure what happened to those plates.  i kinda think he should try doing pours. we all effectively gain success when we find the techniques that work for us. theres compound problems which are hard to solve, then theres intermittent problems which can be even harder.  but when you have a compound intermittent problem? fuck that.  throw it all in the trash and try something else.

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sloug said:

yes, we are saying the same thing. sorry, i may have not worded that properly in my first post. my main point was trying to get accross to proposition122 that it doesnt matter if u leave the weight on or not, once that pressure has reached zero, the air will fully enter the cooker.

appologies for clogging up the airways on this one.

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The Ferryman said:

Surely air must enter the pc as it cools or it would pull a vacuum would it not?

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Correct

Kloakk said:

The Ferryman said:

Surely air must enter the pc as it cools or it would pull a vacuum would it not?

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Correct

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The Ferryman said:

Surely air must enter the pc as it cools or it would pull a vacuum would it not?

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Proposition 122 said:

The Ferryman said:

Surely air must enter the pc as it cools or it would pull a vacuum would it not?

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Right. Air must enter the pressure cooker (PC) as it cools, or else a partial vacuum will form due to the condensation of steam. Jiggle weights are not airtighlt by design. Air comes in SLOWLY through the vent stem replacing the lost steam volume. Air is now coming in through your vent port which has just had superheated steam blasting through it for 20-30 minutes resulting in a RELATIVELY STERILE pathway.

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1NFIN8 said:

Proposition 122 said:

The Ferryman said:

Surely air must enter the pc as it cools or it would pull a vacuum would it not?

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Right. Air must enter the pressure cooker (PC) as it cools, or else a partial vacuum will form due to the condensation of steam. Jiggle weights are not airtighlt by design. Air comes in SLOWLY through the vent stem replacing the lost steam volume. Air is now coming in through your vent port which has just had superheated steam blasting through it for 20-30 minutes resulting in a RELATIVELY STERILE pathway.

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Minor quibble: assuming a perfect seal the vacuum is equivalent to the volume of steam (air mostly as the water volume is minimal) that was expelled through the valve prior to rocker going on and rocker during the cycle.

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Arkyhog said:

My instant pots pull a vacuum after cooling naturally without force ventilation. There is always a suction when removing the lid from the base.

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