Re: thoughts on pressure
Søren Jacobsen wrote:
I was thinking about pressure...
many machines hav 15 bars of pressure.... is that the industry standard or?
the thing is that grindlevel seems to be the way to control brew speed,
but Id think the pressure would be equally important?
The pumps put out 15 bar but it's regulated down from there. Lower
priced machines are regulated by the over pressure valve. Better
machines have an adjustable pressure regulator of some sort, either in
the OPV or at the pump.
R "8.3 bar is the sweet spot" TF
.
Relevant Pages
- Re: Know about plumbing?
... >Well it's very similar except the regulator on the secondary circuit is ... >3 bar not 4.8 bar ... (talking about inlet pressure reducing valves) ... Well that is the job of the TPR valve which usually vents out the top ...
(sci.electronics.misc) - Re: My Espresso Lab and a Plug for Dave B (Dave713, hitechespresso.com)
... NOT adjustable, Phil ... Somewhere along the supply chain of these machines, ... so the machines are at 10 bar each against a ... I understand that newer silvias come with an adjustable pressure relief ...
(alt.coffee) - Re: My Espresso Lab and a Plug for Dave B (Dave713, hitechespresso.com)
... Somewhere along the supply chain of these machines, ... so the machines are at 10 bar each against a ... blindfilter. ... I understand that newer silvias come with an adjustable pressure relief ...
(alt.coffee) - rewtus IV with vibration pump and which I use with the water reservoir (not plumbed). It strikes m
... Since a week I own a Brewtus IV with vibration pump and which I use ... I checked the pressure with a blind filter and it is 11 bar. ...
(alt.coffee) - Re: pci-disable-decode-of-io-memory-during-bar-sizing.patch
... The second problem is that on some machines, when we are doing BAR sizing on PCI devices, and write all ones to a BAR in order to determine how many bits "stick", the BAR ends up overlapping with the MCFG area. ... Usually on these machines the MMCONFIG is located near the top of 32-bit memory and the PCI device causing problems is a PCI Express graphics card. ... We do avoid disabling decode on host bridges, as it's known that some of them disable RAM access when you turn decode off, stupidly. ...
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