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Bezzera BZ-40 pump pressure?

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  • dgarratt
    replied
    The Bz40 is a brilliant machine..should give you many years of quality coffee ;-)

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  • Evascroll
    replied
    Evascroll's Library | Photobucket

    Restoration complete this is my set up!

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  • Evascroll
    replied
    Originally posted by Jimmytheboot View Post
    Back to where you started
    I wish i could explain better but my english tradiction is bad! Is like you says im back at 9 bar but this time is pump pressure not the presure from the house

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  • Evascroll
    replied
    It is truth what somebody says! The firts coffee brew from a fixing machine its the sweetes one jajajaja

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  • Evascroll
    replied
    Originally posted by Jimmytheboot View Post
    Not really, but usually OPV's will route the water back to the tank since they are expected to open most shots and the water will be cool, relief valves to the drip tray
    I dont know about other relief valve but mine what it does it relive the pressure from the oulet and bypass to the inlet it is like i retro fit dont route to the drip tray

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  • Jimmytheboot
    replied
    Back to where you started

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  • Evascroll
    replied
    Happy,happy,happy today i recive the new pump annndddddd it work problem solve! It came over 15 bar sow i just adjust the relive valve and presto 9 bar brewing thank everybody for the help

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  • Jimmytheboot
    replied
    Originally posted by MrJack View Post
    Is there a difference between an OPV and a pressure relief valve, apart from the name (these are also known as pressure safety valves "PSVs" in industrial applications)?
    Not really, but usually OPV's will route the water back to the tank since they are expected to open most shots and the water will be cool, relief valves to the drip tray

    Leave a comment:


  • Evascroll
    replied
    Originally posted by Jimmytheboot View Post
    From the file:



    So your pump is setup perfectly for your incoming water pressure, relax go have a coffee
    Jajaja thanks god that i have to much pressure in the house! Im using that pressure to brew the coffe, i take out the pump (waiting for the new one by 3 days) and connect the water direct to the machine and waalllaaa! 8 bar brewing coffe taste a little bitter but i have coffe

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  • MrJack
    replied
    Re: Bezzera BZ-40 pump pressure?

    Is there a difference between an OPV and a pressure relief valve, apart from the name (these are also known as pressure safety valves "PSVs" in industrial applications)?

    Leave a comment:


  • Jimmytheboot
    replied
    Originally posted by Evascroll View Post
    This is the spec about procon pump if any is interesting

    http://96.61.63.50/techlib/Procon/Pr...l_cat_D603.pdf
    From the file:

    Be advised that due to the
    design of the relief valve, the relief valve reacts to the difference in pressure
    between the inlet and the outlet. As a result, the highest pressure which the
    pump can develop at its discharge port is the inlet pressure plus the specified
    relief valve setting.
    So your pump is setup perfectly for your incoming water pressure, relax go have a coffee

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  • Evascroll
    replied
    This is the spec about procon pump if any is interesting

    http://96.61.63.50/techlib/Procon/Pr...l_cat_D603.pdf

    Leave a comment:


  • Evascroll
    replied
    Originally posted by Jimmytheboot View Post
    Its not certain anything is wrong with the pump, the gauge is reading your house water pressure which is really high.

    When its pumping from the bucket it reads 1 bar or is that the reading with the pump off?
    1 bar when is pumping fron the bucket!

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  • Evascroll
    replied
    Originally posted by Javaphile View Post
    Given that the bz40 is a commercial machine with a rotary pump I would be very surprised if it has an OPV.


    Java "Pressure me up Scotty!" phile
    For what i read and trust me (3 days in a row non stop)your are rigth! Bz40 dont have OPV! The only way of mod the pressure is on the Relief Valve Pressure in the pump it self

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  • Javaphile
    replied
    Originally posted by Talk_Coffee View Post
    Many of the rotary pump machines we sell also incorporate an OPV. They are usually set to 12 Bar and act as a fail safe should the pump bypass fail for any reason.
    On plumbed in commercial machines? Interesting, hadn't seen that before.


    Java "Always learning" phile

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