SyracuseCoffee Senior Member Joined: 5 Mar 2014 Posts: 28 Location: Syracuse Expertise: I like coffee
Espresso: NS Oscar Grinder: Compak K3
Posted Wed Mar 5, 2014, 9:40am Subject: Installing OPV & Vacuum Relief on a Plumbed Oscar
I've done a lot of reading and lurking on this site but information on plumbed Oscars is a little thin. Plumbing to the machine itself is fairly straightforward with the usual shutoffs, pressure regulator, check valves, drain lines, etc. Running the lines under/through the counter is probably going to be a pain. My questions for a plumbed (direct connect) Oscar are....
Should the discharge of an OPV installed on the feed to the Oscar HX have to go to the drip tray or drain? It seems to me that is required because re-directing the flow back to the pump inlet/tank (like is done for the pour-over Oscar) would affect the operation of the OPV and/or the pump since both the inlet to the pump and the discharge of the OPV would be subject to line pressure. Maybe I'm wrong on this?
Is there any issue with installing a Vacuum Relief valve on a plumbed Oscar? I am planning on installing the Musica vacuum relief valve so I can put the Oscar on a timer.
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