Search found 3 matches

by MarcoChao
March 3rd, 2011, 9:19 am
Forum: Espresso Machines
Replies: 23
Views: 10461

About 3-way Solenoid Valve Operation

Thank you so much! This is like Eureka to me! By using this calculation, does that mean when we use a 58mm basket to make coffee ( provided that the pressure is 9bar), the coffee bed actually has 534lb of force on it and 446lb on the ones with 53mm basket in diameter? If this is right, then it
by MarcoChao
March 2nd, 2011, 9:11 am
Forum: Espresso Machines
Replies: 23
Views: 10461

About 3-way Solenoid Valve Operation

Thanks a lot for the reply! So, did you mean there is no pressure at all against the piston when it is in the rest position? I don't understand, because I suppose there is nothing blocks the water away from the piston. And if the water does contact with the piston, then the piston must experience th...
by MarcoChao
March 2nd, 2011, 7:35 am
Forum: Espresso Machines
Replies: 23
Views: 10461

About 3-way Solenoid Valve Operation

Hello guys! A couple of days ago, I did a little inspection of my beloved Linea to see if she needs a descale. I took the brewhead 3-way solenoid valve off, and surprisingly I found the spring around that solenoid nucleus is a lot softer than I would expect. I know the pressure from brewing boiler c...