Portafilter pressure gauge - Page 2

Beginner or pro barista, all are invited to share.
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trzynkaa
Posts: 40
Joined: Thu Oct 16, 2008 1:23 am
Real Name: Andrew
Equipment: Kony, Modified Wega Lyra, Omega HH147
Location: Portland, Oregon USA
Interests: Espresso?

Postby trzynkaa » Fri Feb 12, 2010 9:19 pm

Portafilter pressure gauge

I built one with a small needle valve...
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The brass fittings (including the needle valve) came from the local hardware store.
The silicone fluid damped, 0-160 psi pressure gauge came from McMaster-Carr: Part Number: 9780T215
http://www.mcmaster.com/#9780t215/=5sipy6
And I did a little machine work on the brass fittings to make the assembly shorter so it would nicely fit.

Andrew

decaf_Ed
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Joined: Tue Sep 30, 2008 5:09 pm
Real Name: Ed Dyer
Equipment: Expobar Office Control; Macap MC4
Location: Minnesota USA

Postby decaf_Ed » Fri Feb 12, 2010 9:56 pm

Andrew,
Nice!!
And thanks for the link on the pressure gauge.
-Ed

ethorson
Posts: 49
Joined: Thu May 21, 2009 12:49 am
Real Name: Eric Thorson
Equipment: Bezzera BZ35, Modified Bunn ES-1A, Homemade Roaster, Mazzer Mini, Bodum Grinder
Location: Port Townsend

Postby ethorson » Fri Feb 12, 2010 10:13 pm

Apparently there are lots of ways to make home brew pressure gauges. I had an unused compression gauge and backflush basket around and came up with this version. I leave the gauge connection loose to allow some leakage to approximate the normal shot flow.

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Vad
Posts: 231
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Real Name: Vad
Equipment: Promac Club PU 1-group semiautomatic, Elektra Nino, Mazzer Mini.
Location: Czech Republic

Postby Vad » Mon Feb 15, 2010 7:37 pm

These are the pictures of mine:
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Needle valve is a very good thing to have. Especially if you have vibration pump. The difference in reading (precision) on rotary pump (in my case) is about 0.5 Bar with adjusted valve (30 ml water in 30 seconds) vs. closed.

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@3aan
Posts: 33
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Real Name: Adriaan
Equipment: Versalab M3, Astoria Fiore lever, Bezzera 1977 lever, Bezzera 1983 B200AL 2 group
Location: Westland / Netherlands

Postby @3aan » Tue Apr 12, 2011 5:06 pm

See this Flickr movie made with mine PF ( BTW its for a E61 ) used without the filterbasket
http://www.flickr.com/x/t/0090009/photos/59549443@N04/5595667116/



Just pics;

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LMWDP #377 @3aan