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Discussions > Espresso > General > Wet Puck vs Dry...  
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TVC15
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Joined: 25 Jun 2008
Posts: 11
Location: LA
Expertise: Just starting

Posted Wed Jun 25, 2008, 1:35am
Subject: Wet Puck vs Dry Puck
 

Is the following statement correct?

"A dry puck can not be achieved without a solenoid switch on the espresso machine."
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philosogeek
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philosogeek
Joined: 21 Sep 2007
Posts: 448
Location: Northborough, MA
Expertise: I like coffee

Espresso: Livia 90 Semi-Auto
Grinder: Mazzer SJ, Maestro
Vac Pot: Yama 8 and 3 cup
Drip: Pour over, Clever coffee...
Roaster: Behmor
Posted Wed Jun 25, 2008, 4:05am
Subject: Re: Wet Puck vs Dry Puck
 

Hi TVC15,

Welcome to the boards!

Most machines that give you a dry puck will have a solenoid.  But you can also get a dry puck without one, it just takes more time.  Without a solenoid you have to let your pf sit in the grouphead or on the drip tray for 3 or 4 minutes before knocking it out.  But having a non-pressurized portafilter is essential to the process, otherwise the water is retained in the basket because it isn't under pressure.

A more accurate statement would be "A dry puck can not quickly be achieved without a solenoid switch on the espresso machine."

Hope this helps,
-p
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pstam
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pstam
Joined: 27 Jan 2004
Posts: 2,349
Location: Beijing
Expertise: Professional

Espresso: ECM, SAN MARCO, EURO 2000
Grinder: MAZZER
Vac Pot: YES
Drip: YES
Roaster: YES, HOME STYLE
Posted Fri Jun 27, 2008, 11:30am
Subject: Re: Wet Puck vs Dry Puck
 

TVC15 Said:

Is the following statement correct?

"A dry puck can not be achieved without a solenoid switch on the espresso machine."

Posted June 25, 2008 link


What is the matter of dry or wet puck with solenoid switch?  What solenoid switch is really?

 
Peter in Beijing
-------------------
http://www.kaffa.cn/
-------------------
I am looking for the way and the place to extend our trainning courses.
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olph4rt
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olph4rt
Joined: 16 Jul 2007
Posts: 350
Location: Milton, Ontario
Expertise: I love coffee

Espresso: Modded Nemox Caffe Fenice
Grinder: Compak K6 / Nemox Lux /...
Roaster: Behmor 1600
Posted Fri Jun 27, 2008, 11:51am
Subject: Re: Wet Puck vs Dry Puck
 

pstam Said:

What is the matter of dry or wet puck with solenoid switch?  What solenoid switch is really?

Posted June 27, 2008 link

If you know that you get a dry puck because the pressure that is released from the brew is instantly relieved by the 3-way valve...sucking off the top water from the puck in the process so the portafilter can be quickly removed, without burping boiling grinds all over you, then there are other benefits.  If you have a 3-way (in this thread "they" are calling it the solenoid switch)...then you know that you start with a dry puck.  Armed with this info, if you encounter a wet puck, then you will know that something is wrong.  You can't get that kind of analysis without it.  You're pucks can tell you a lot...like reading tea leaves to tell me my future.  

-Alan :D, who feels badly that he has broken the run-on-sentence laws...and who gets gut rot from black tea, and therefore has no future to foretell.
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jacbri
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jacbri
Joined: 18 Aug 2007
Posts: 234
Location: Saint Paul
Expertise: I love coffee

Espresso: Rancilio S26
Grinder: La Pavoni Zip/Astoria Super...
Roaster: Behmor 1600/digital scale
Posted Fri Jun 27, 2008, 8:56pm
Subject: Re: Wet Puck vs Dry Puck
 

olph4rt Said:

If you know that you get a dry puck because the pressure that is released from the brew is instantly relieved by the 3-way valve...sucking off the top water from the puck in the process so the portafilter can be quickly removed, without burping boiling grinds all over you, then there are other benefits.  If you have a 3-way (in this thread "they" are calling it the solenoid switch)...then you know that you start with a dry puck.  Armed with this info, if you encounter a wet puck, then you will know that something is wrong.  You can't get that kind of analysis without it.  You're pucks can tell you a lot...like reading tea leaves to tell me my future.  

-Alan :D, who feels badly that he has broken the run-on-sentence laws...and who gets gut rot from black tea, and therefore has no future to foretell.

Posted June 27, 2008 link

so with the 3 way valve the puck should be relatively dry? My pucks generally are free of water on top, but definitely wet if I take the portafilter out immediately. If  I wait a few minutes then the puck is dry.
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pstam
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pstam
Joined: 27 Jan 2004
Posts: 2,349
Location: Beijing
Expertise: Professional

Espresso: ECM, SAN MARCO, EURO 2000
Grinder: MAZZER
Vac Pot: YES
Drip: YES
Roaster: YES, HOME STYLE
Posted Fri Jun 27, 2008, 9:36pm
Subject: Re: Wet Puck vs Dry Puck
 

olph4rt Said:

......  You're pucks can tell you a lot...like reading tea leaves to tell me my future.  .

Posted June 27, 2008 link


Can you?  I never heard it.  Hehehe,,,  :)


About the wet or dry puck, it is fully depends on the amount of coffee ground.  If the ground is small, there is space for water and the puck will be wet.  If the ground is quite much, there will be no free space for the water and the puck will be dry.  For wet puck, if it is left for a while, the water will be steamed out and the puck become dry.  This is our own understanding.

 
Peter in Beijing
-------------------
http://www.kaffa.cn/
-------------------
I am looking for the way and the place to extend our trainning courses.
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