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Espresso: Espresso Mods and Restorations
Gaggia Steam Wand Drip
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,719
Location: CA
Expertise: I love coffee

Espresso: SAMA (2), Maximatic, Cremina...
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop   Huky en route
Posted Thu May 1, 2014, 12:31pm
Subject: Re: Gaggia Classic Steam Wand Drip & Valve Modification
 

Install the new one and then modify the one you are removing so you have it on hand if/as/when the new one starts dripping.
Best of both worlds....

Susan
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walkinghispath
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Joined: 18 May 2014
Posts: 17
Location: Worldwide
Expertise: Pro Barista

Espresso: Kitchenaid Pro Line (PID'd),...
Grinder: Kitchenaid Pro Line (Mazzer...
Drip: Krups grind and brew for the...
Roaster: Dog bowl and a heat gun
Posted Sun May 18, 2014, 4:48pm
Subject: Re: Gaggia Classic Steam Wand Drip & Valve Modification
 

I can get mine to stop leaking for a while if I open and close it repeatedly while descaling.  What you're trying to do is get the scale out of the valve while forming the brass surface of the valve pin and body to mate better.
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Fidelm
Senior Member


Joined: 30 Nov 2013
Posts: 15
Location: United states
Expertise: I love coffee

Espresso: Gaggia Classic, Isomac Itala
Grinder: Baratza Virtuoso
Posted Sun Jun 15, 2014, 7:19pm
Subject: Re: Gaggia Classic Steam Wand Drip & Valve Modification
 

DenisSeattle Said:

I researched the Classic dripping problem and concluded that it's probably due to stubborn scale. I found "Tex's Directions for Modding your Steam Valve so you can actually open and clean it."

I did that modification and made a video that shows how I took the collar off of the steam valve body:

https://www.youtube.com/watch?v=4aBsYGXpLcc&list=PLvvVo5WHwtQOvJL2lp2Gk1AtVfnVrAah7&index=3

Now I can remove the stem and clean the valve with descaling solution. It appears that this fixes the dripping. Some notes:
The mod isn't hard, but it does involve grinding off metal parts. Don't do the mod if you're not comfortable with that idea. Also see the safety precautions in the video.

Very frequent and intense descaling with strong solution might prevent or even reverse this problem without the mod, it's worth a try.

New valves are available for around $70. I found them at WLL and Partsguru. The part number is EF0045/01/A.

You might have actual damage to the brass needle and seat if the valve has been badly overtightened. Then the fix gets more complicated. Brass is soft. Try brass polish before resorting to more aggressive measures. The needle and seat must mate perfectly, which they did when the valve was new. Once you start abrading it, the changes you make could cause a permanent leak. It might be worth the money to start fresh with a new valve.

Posted March 13, 2014 link

Awesome mod. looks like it could be dangerous if you have friends/family-rando's constantly using your machine though. just because they might over loosen the valve and blast themselves with the steam.
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