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MiNdTwIsTeR
ThirdEye

Registered: 10/14/08
Posts: 427
Last seen: 7 years, 18 days
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**problem with presto PC wont go over 14psi**
#16954134 - 10/02/12 07:02 PM (11 years, 4 months ago) |
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At 12-13psi the pressure weight starts hissing and wobbles and let's most the steam out as it approaches 14 and the it wont get up to 15psi...
Anybody had this problem or is 14psi plenty??
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Summer 09' Beautiful Plant (date on cam wrong) **MiNdTwIsTeRs Trade List**
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Beefy1
GONE


Registered: 05/01/09
Posts: 3,573
Loc: around
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Re: **problem with presto PC wont go over 14psi** [Re: MiNdTwIsTeR]
#16954210 - 10/02/12 07:11 PM (11 years, 4 months ago) |
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My cheap presto only goes to 12psi.
Some models you might be able to buy a heavier weight.
Just cook things a little longer for the slightly lower temperature/pressure. There's a chart around here somwhere that will tell you how much longer you should go.
I've had no problems doing grain at 12psi for a full 2 hours.
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Tryptd
Scientist

Registered: 09/12/12
Posts: 40
Last seen: 2 years, 2 months
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Re: **problem with presto PC wont go over 14psi** [Re: MiNdTwIsTeR]
#16954363 - 10/02/12 07:34 PM (11 years, 4 months ago) |
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The pressure gauges are really cheap on these cookers and aren't very precise.. I'd say it's much more likely that the gauge is off and the weight is fine.
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NineInchNails
Stranger

Registered: 03/01/09
Posts: 1,190
Last seen: 1 year, 1 month
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Re: **problem with presto PC wont go over 14psi** [Re: Beefy1]
#16954367 - 10/02/12 07:34 PM (11 years, 4 months ago) |
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It could just be the pressure gauge not reading accurate, but who knows for sure?
I just checked and I have multiple models of Mirro PCs and the largest All American PC. Every one of their weights are identical. They all even weigh the same (by the gram).
I wonder if one of these weights will fit on a Presto and regulate the psi with more precision than the rocker that most Prestos use. I don't have a Presto on hand, but I can tomorrow. I'll check and see. Hell I might even try it myself by running an empty load just out of curiosity.
Edited by NineInchNails (10/02/12 07:43 PM)
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Hellyen
Just Strange.



Registered: 07/26/12
Posts: 353
Loc: The Twilight Zone.
Last seen: 11 years, 7 days
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Re: **problem with presto PC wont go over 14psi** [Re: Tryptd]
#16954416 - 10/02/12 07:40 PM (11 years, 4 months ago) |
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Do your grow. See how it goes. If you're still under warranty say the shit isn't up to specs and return it. See if next one is more precise. But as stated more likely guage is shit but your weight is probly right.
-------------------- I'm a mushroom cloud layin' Mother Fucker... Mother Fucker.
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 22 days
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Re: **problem with presto PC wont go over 14psi** [Re: Hellyen]
#16955670 - 10/02/12 10:31 PM (11 years, 4 months ago) |
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As said, it's probably just the made in china gauge, but regardless there's little difference for our use between the temp at 12 psi and 15 psi. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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Gretchenmeister
Starbeing/Psilocybin Savant



Registered: 07/23/05
Posts: 1,032
Loc: From the Stars
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Re: **problem with presto PC wont go over 14psi** [Re: RogerRabbit]
#16955712 - 10/02/12 10:39 PM (11 years, 4 months ago) |
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Is it a 23 quart model?
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TheEaglesGift
The Nagual


Registered: 04/10/11
Posts: 10,554
Loc: Ixtlan, Mexico
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Re: **problem with presto PC wont go over 14psi** [Re: Gretchenmeister]
#16955922 - 10/02/12 11:10 PM (11 years, 4 months ago) |
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My All American gauge won't register above 13 PSI comfortably. I do my grains at 13 PSI for 2 hours. In 100's of jars I've never seen trich once. I've seen some cobweb, but it was from dirty inoculant.
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