Finding the over-pressure valve on Bezzera BZ09

#1: Post by **misterpieter** » March 23rd, 2012, 9:10 pm

Can anyone help me locate the OPV on the BZO9?
(i find the underpressure-, 3-way-, 'everyway-' and 'everything', but no OPV...)

http://www.bezzera.it/pdf/42-en-BZ09_99 ... _rev00.pdf

thnx

#2: Post by **kize** » March 23rd, 2012, 9:49 pm

On the Diagram- I see what they label as a surpression valve with 2 calibrated springs rated @12 bar and a 3 way valve.

http://users.rcn.com/erics/ · #3: Post by **erics** » March 23rd, 2012, 10:25 pm

Stan's correct - turn item 6 in table 2 of the pdf until you get the pressure you want. A suggestion would be to put a blind filter in the group and adjust to 9.0 bar.

I suspect you will be happy.

March 24th, 2012, 6:49 am

we (my colleague and me) thought so too..
But when an other barista said that the suppression valve was an other valve, (i think his explanation was: 'releases the pressure from the boiler when this cools down') we weren't too sure anymore..

please confirmation that the BEZ's 'suppression valve' = 'overpressure valve'

thnx

http://users.rcn.com/erics/ · #5: Post by **erics** » March 24th, 2012, 9:26 am

please confirmation that the BEZ's 'surpression valve' = 'overpressure valve'

That's correct.