Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Espresso: Espresso Machines
$10 portafilter brew pressure gauge
Commercial Equipment
Nuova Simonelli, La Marzocco, Rancilio. Nationwide installation. Instant financing options.
www.seattlecoffeegear.com
 
Not Logged in: Log In to Postlog in
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered  
Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Discussions > Espresso > Machines > $10 portafilter...  
view previous topic | view next topic | view all topics
showing page 1 of 7 last page next page
Author Messages
RapidCoffee
Senior Member
RapidCoffee
Joined: 4 Dec 2004
Posts: 1,930
Location: Rapid City, SD
Expertise: I love coffee

Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Thu Dec 8, 2005, 5:55pm
Subject: $10 portafilter brew pressure gauge
 

I must have had too much time on my hands, because I recently decided to do some fine tuning of my espresso machine. I insulated the boiler, reduced the boiler temp... what next? Well, adjust the brew pressure of course! But my Rancilio L7 does not have a pump pressure gauge, only a boiler pressure gauge. So I stopped by a local hardware store and walked out with a pressure gauge and reducing coupler.

This is old hat to some folks (e.g., see Dan Kehn's post on this thread), but maybe it'll be of interest to others. I chose a pressure gauge from the plumbing section with a 2" dial and 1/4" NPT diameter thread on a lower mount, rated to 200 psi (14 bar). I used a 3/8" to 1/4" female brass reducing coupler to attach it to the portafilter, with a couple twists of Teflon tape to make it watertight.

Total cost: $10. Took about 2 minutes to assemble, and works great!

RapidCoffee: BrewPressureGauge.jpg
(Click for larger image)
back to top
 View Profile Link to this post
BSOD
Senior Member
BSOD
Joined: 25 Jan 2004
Posts: 198
Location: Melbourne, Australia
Expertise: I love coffee

Espresso: Gaggia Espresso Deluxe
Grinder: Imat Lux
Drip: FP - Various
Roaster: Hmm . . . .
Posted Thu Dec 8, 2005, 6:05pm
Subject: Re: $10 portafilter brew pressure gauge
 

It's not clear from your pic, but can you actually brew with this connected (ie is there anywhere for the espresso to leave)?
back to top
 View Profile Link to this post
RapidCoffee
Senior Member
RapidCoffee
Joined: 4 Dec 2004
Posts: 1,930
Location: Rapid City, SD
Expertise: I love coffee

Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Thu Dec 8, 2005, 7:26pm
Subject: Re: $10 portafilter brew pressure gauge
 

BSOD Said:

It's not clear from your pic, but can you actually brew with this connected (ie is there anywhere for the espresso to leave)?

Posted December 8, 2005 link

Uh, no. You have to unscrew the gauge (at least) before brewing. This is for setting the brew pressure, not monitoring it during the pour.

Actually, that brings up an interesting point. The measured pressure may be slightly higher using a PF gauge, since there is no liquid pushing out through the coffee grinds. It should give you the maximum pressure setting - anything more will cause pressure to be released through the overpressure/relief valve. I assume it's useful nonetheless (since you can purchase commercial versions).

Has anyone checked for differences between brew pressure gauge readings during a shot, and pressure measurements from a PF gauge such as this one?
back to top
 View Profile Link to this post
PietroR
Senior Member
PietroR
Joined: 4 Jan 2005
Posts: 163
Location: Tucson
Expertise: I love coffee

Espresso: Fiorenzato Briccoletta...
Grinder: Mazzer Mini
Drip: I think its a Bodum French...
Roaster: Drum/BBQ and Coffee...
Posted Thu Dec 8, 2005, 9:05pm
Subject: Re: $10 portafilter brew pressure gauge
 

is that an oil filled or dry guage?
back to top
 View Profile Link to this post
RapidCoffee
Senior Member
RapidCoffee
Joined: 4 Dec 2004
Posts: 1,930
Location: Rapid City, SD
Expertise: I love coffee

Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Thu Dec 8, 2005, 10:36pm
Subject: Re: $10 portafilter brew pressure gauge
 

PietroR Said:

is that an oil filled or dry guage?

Posted December 8, 2005 link

This gauge is dry - largely because that was all I found in the hardware store :-). My machine has a rotary pump, and I have not seen any pressure fluctuations. Just a slow ramp up to the current pressure setting of 9 bars, then rock steady. You might consider a glycerin-filled gauge or a snubber if you get pressure oscillations (more likely with a vibe pump).
back to top
 View Profile Link to this post
Ziggy
Senior Member


Joined: 31 Jan 2004
Posts: 41
Location: Idaho
Expertise: Just starting

Espresso: Faema Compact S single group...
Grinder: Mazzer Super Jolly,Faema...
Posted Mon Dec 12, 2005, 3:43pm
Subject: Re: $10 portafilter brew pressure gauge
 

RapidCoffee,

I am thinking of doing this for my Faema Compact which has a vibe pump. What is a snubber and where would I find one?  thanks for your help

Edward Zigmond
back to top
 View Profile Link to this post
fad
Senior Member
fad
Joined: 19 Apr 2003
Posts: 633
Location: Sydney, Australia
Expertise: I live coffee

Espresso: Grimac La Uno, Isomac...
Grinder: Mazzer SJ. Cunill...
Vac Pot: Bodum Santos
Drip: SwissGold
Roaster: Ron Kyle BBQ Drum,...
Posted Mon Dec 12, 2005, 4:10pm
Subject: Re: $10 portafilter brew pressure gauge
 

Ziggy Said:

RapidCoffee,

I am thinking of doing this for my Faema Compact which has a vibe pump. What is a snubber and where would I find one?  thanks for your help

Edward Zigmond

Posted December 12, 2005 link

Googling for "pressure snubber" turns up pages like this

- Pressure snubbers smooth out pressure impulses and fluctuations
- Pressure snubbers remove harmful solids from actuating fluid
- Pressure snubbers assure steady average pressure readings

Cheers

Paul Haddon
Sydney, Aus
back to top
 View Profile Visit website Link to this post
RapidCoffee
Senior Member
RapidCoffee
Joined: 4 Dec 2004
Posts: 1,930
Location: Rapid City, SD
Expertise: I love coffee

Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Tue Jan 3, 2006, 9:07pm
Subject: Re: $10 portafilter brew pressure gauge
 

Follow-up post:

I now have a Quick Mill Vetrano with a built-in pressure gauge. Thought I'd test my $10 do-it-yourself gauge for accuracy. Here it is without the pump engaged.

RapidCoffee: BrewPressureGauge2.jpg
(Click for larger image)
back to top
 View Profile Link to this post
RapidCoffee
Senior Member
RapidCoffee
Joined: 4 Dec 2004
Posts: 1,930
Location: Rapid City, SD
Expertise: I love coffee

Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Tue Jan 3, 2006, 9:08pm
Subject: Re: $10 portafilter brew pressure gauge
 

And with the pump on: 9 bar on both gauges. Not bad!

RapidCoffee: BrewPressureGauge3.jpg
(Click for larger image)
back to top
 View Profile Link to this post
mineralman55
Senior Member


Joined: 4 Jan 2006
Posts: 86
Location: southeast Louisiana
Expertise: I live coffee

Espresso: Quick Mill Anita, Krups...
Grinder: Macap M4 DL, Gaggia MDF
Vac Pot: yes
Drip: Gevalia
Roaster: not yet
Posted Fri Jan 27, 2006, 3:11pm
Subject: Re: $10 portafilter brew pressure gauge
 

So what does your Ventrano read when it is flowing a shot?
back to top
 View Profile Link to this post
showing page 1 of 7 last page next page
view previous topic | view next topic | view all topics
Discussions > Espresso > Machines > $10 portafilter...  
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered     Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Not Logged in: Log In to Postlog in
Discussions Quick Jump:
Symbols: New Posts= New Posts since your last visit      No New Posts= No New Posts since last visit     Go to most recent post= Newest post
Forum Rules:
No profanity, illegal acts or personal attacks will be tolerated in these discussion boards.
No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum.
No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek.
No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum.
Who Can Read The Forum? Anyone can read posts in these discussion boards.
Who Can Post New Topics? Any registered CoffeeGeek member can post new topics.
Who Can Post Replies? Any registered CoffeeGeek member can post replies.
Can Photos be posted? Anyone can post photos in their new topics or replies.
Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts.
Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.
Donate to Coffee Kids
Coffee Kids works with farming communities around the world, improving lives. Donate today.
www.coffeekids.org
Home | Opinions | Consumer Reviews | Guides & How Tos | CoffeeGeek Reviews | Resources | Forums | Contact Us
CoffeeGeek.com, CoffeeGeek, and Coffee Geek, along with all associated content & images are copyright ©2000-2014 by Mark Prince, all rights reserved, unless otherwise indicated. Content, code, and images may not be reused without permission. Usage of this website signifies agreement with our Terms and Conditions. (0.508311033249)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+