Maybe It really is me but I can not get only one shot of coffee out of this point without a bunch of grounds in it. As with the OVP (in excess of tension valve) and pre-infusion, a solenoid valve is something you'd usually be expecting in commercial machines or https://beaumruya.ltfblog.com/27572684/an-unbiased-view-of-can-you-get-alexa-controlled-coffee-machine