Does anyone know what this is, please?

[hiker Member Find all posts View Profile Close hiker]

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Ive just descaled my Rancilio Silva and run through 2 tanks of flushing water and noticed that when I switch off the pour there is a residual flow through this black tube thing.  I recognise the electrical component as a Parker solenoid valve and wonder if it is malfunctioning - just cant understand why the black cigar thing exists there is a delay is shut off and why is there excess water .... and why is there a black tube thing if it is just excess run off ... etc etc etc

So I now have about 15 ml of excess water after every pour

any ideas appreciated

thanks


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[ajayro57 Senior Member Find all posts View Profile Close ajayro57]

Re: Does anyone know what this is, please?

That is the three-way solenoid valve. After you finish pouring the espresso and turn off the pour switch, the excess water pressure is diverted via the valve, and drains into the drip tray. This way, you can release the group handle and not have excess water and coffee grounds spray all over you

[hiker Member Find all posts View Profile Close hiker]

Re: Does anyone know what this is, please?

Many thanks ....  so the overflow of 10-15ml is normal?  So the black cigar is just a sophisticated drain pipe?

thanks again!

[Caffeine_Fiend Member Find all posts View Profile Close Caffeine_Fiend]

Re: Does anyone know what this is, please?

Yes, and yes

[hiker Member Find all posts View Profile Close hiker]

Re: Does anyone know what this is, please?

thanks all ..... the drain pipe can stay!

[WSullivan Senior Member Find all posts View Profile Close WSullivan]

Re: Does anyone know what this is, please?

Lucky drain pipe! ;D funny thread! ;D

[A_M Guest Find all posts View Profile Close A_M]

Re: Does anyone know what this is, please?

Lucky drain pipe! ;D funny thread! ;D

ROFLMFAO...   Just remember as this gets older, the volume of the drips get smaller and more of a trickle..

I guess I should be lucky that my drain pipe is still with me...

[hiker Member Find all posts View Profile Close hiker]

Re: Does anyone know what this is, please?

hate that residual drip when you switch off - hope it doesnt become a talking point!