Question about Gaggia Evolution Espresso Machine

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My Gaggia Evolution has a water leak between the brass steam valve and top of cast alloy boiler. Where can I get a new rubber seal to fit this?

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The easiest place for this is either servicesunlimited.com or wholelattelove, they have a good supply of parts on hand or find your nearest gaggia dealer and get the part from them.

Posted on Jul 30, 2010

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Posted on Jan 02, 2017

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Fixing traditional home espresso coffee machine, Gaggia, Saeco, La pavoni,...


Fixing traditional home espresso coffee machine, Gaggia, Saeco, La pavoni, Rancilio, Francis Francis

FrancisFrancis X1 , X5, Gaggia Baby, Nuova Simonelli Oscar , Ascaso Dream , Gaggia Classic , Rancilio Silvia Rancilio Silvia


The in formation on this page is for use of technicians and experienced persons. All others do so at their own risk.

Traditional Home Espresso Machines Have the Following Parts:
1. A brass or aluminum boiler (16 to 40 oz. capacity).
2. A boiler outlet valve to help increase the pressure of water, before it is pumped through coffee grounds.
3. An oscillating pump with or without external thermostat.
4. A steam valve with a knob to open & close steam/hot water outlet.
5. Thermostat to limit temperature of water or steam.
Limit for espresso water temperature: 90°C to 98°C
Limit for steam temperature: between 127°C to 152°C.
6. A thermofuse to shut power supply when temperature in the boiler exceeds the higher limit (usually 185°C).
7. Solenoid valve (selected Gaggia models only).
8. A filter cup holder handle to place ground coffee for extraction of espresso.
The pump models generally are easy to open. In most brands, the top cover is fixed with two to four screws. In the Barista/Rio Vapore models, the top cover curves around to the back and the top has two screws. The front end has about 1/3" 90 degree fold. This folded lip is wedged between two plates. It may be necessary to use a long screw driver or other rod, pushed under the top cover, alternatively on either side of the machine to nudge the cover free and lift up. Note the slide along the left side in the picture below. Once the top cover is taken off, the entire internal set up can be viewed. The pictures below show two popular models:
1. Gaggia Model Espresso (without solenoid valve)
2. Saeco Espresso Classico (rapid steam model)




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on Aug 13, 2010 | Coffee Makers & Espresso Machines

1 Answer

My Titanium leaking water. Under it


The steam valve assembly that the steam knob on the right hand side connects into is probably faulty. When you're steaming if you hear hissing coming from behind the knob then this indicates the connections into this assembly are leaking steam, and also hot water, which is why you're getting puddles under the machine. You can get a replacement steam valve assembly that fixes some issues with the original (part code SVM-17, available from www.partsguru.com) and will prevent the leakage, or you could simply try opening the top of the coffee machine and removing the tube that runs from the boiler into the steam valve. It has two o-rings that provide the seal where it connects into the steam valve assembly, and if you lubricate these with a food grade silicon lubricant it may fix the problem. My Gaggia is 7 years old so I decided to replace the whole assembly which costs about $50 and that solved the problem completely.

Apr 04, 2011 | Gaggia Titanium Espresso Machine

1 Answer

My gaggia classic steam control knob is inaccurate and fails to turn off the steam completely. the system leaks a lot of water into the tray


you should take out the knob first, than you try to disasembke the SHAFT of valve from the valve body, in this types(small espresso coffe machines) usualy producer use conical valve, without seals she close metal to metal, when you get out the SHAFT you will see one line on the conical end. for repairing it will be enough to visit one metal vorkery where they will take a small amount of brass from end and polish it. then you put it back and work again with your machine. During assembling valve change 2 o rings and put one fitting 1/4'' to block the shaft coming out.

ps: notice you only polish the SHAFT , dont let them to short the more than 0.5 mm

Feb 11, 2011 | Gaggia Classic Espresso Machine

1 Answer

My machine pours steam out from the pressure valve, the machine gets very very hot ( to hot ) cant even touch the steam arm


For repairing your steam valve you must take it out from boiler(2 screws m6 hold valve to boiler) before unscrew valve you must take of valve plastic knob and steam pipe.
Carefully you take off the seal of valve, seal prevents axle from completely unscrewing. You unscrew the axle and you go to turner (metal parts shaping machine) there you repair the top of axle, it is like pencil, you only need to sharpen it a bit, than you change 2 o rings in axle, put it in back. Instead the seal you use now one fitting !/4" and you screw it on to prevent getting out the axle

Feb 09, 2011 | Gaggia Classic Espresso Machine

1 Answer

Gaggia Evolution is overheating


Check the thermostat on the side of the boiler, that might be damaged.

Apr 11, 2010 | Gaggia Evolution Espresso Machine

1 Answer

My gaggia evolution leaks water while making coffee .It appears to be coming from inside the machine and leaks everywhere.I have disassembled the machine but i still can 't see where the water is coming...


There are many possible points that the leak can be.

All points of the water supply from water tank to the pressure pump then to boiler and finally to coffee group. All this are connected together with plastic or Teflon pipes with easy fit unions secure with clips

Oct 22, 2009 | Gaggia Evolution Espresso Machine

1 Answer

Water is leaking, while the machine heats water for steaming


The steam valve tap rod needs to be replaced, or check machine if it has a plastic steam valve, Gaggia designed a new Stainless steel steam valve for the compact machine.

May 23, 2009 | Gaggia Syncrony Compact Coffee...

1 Answer

Machine Does not draw water into the boiler


I have had this same problem - it is due to an airlock in the boiler/tubes. Simple solution is to use a syringe or similar and gently force some water up the intake hose from the tank, then try the pump again.

May 21, 2007 | Gaggia Evolution Espresso Machine

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