Got my new portafilter pressure gauge from Jetblack today.
Ordered it to check Grimac Mia's pressure.
it's a cheap, small unit which screws onto the stub of the portafilter where the spout goes. Some teflon tape on the threads stopped the leaks under pressure.
I was very surprised to learn Miss Mia has high pressure. Not 9, or 10 bar as expected of a vibe pump, but a whopping 15.
Looks like another day on the spanners coming up (assuming it's adjustable. There's a return hose so it's promising)
Big Grimac has an inbuilt gauge, and long ago I set the rotary pump overpressure at 9. The new gadget shows 8 bar, but I'll leave things be.
Ordered it to check Grimac Mia's pressure.
it's a cheap, small unit which screws onto the stub of the portafilter where the spout goes. Some teflon tape on the threads stopped the leaks under pressure.
I was very surprised to learn Miss Mia has high pressure. Not 9, or 10 bar as expected of a vibe pump, but a whopping 15.
Looks like another day on the spanners coming up (assuming it's adjustable. There's a return hose so it's promising)
Big Grimac has an inbuilt gauge, and long ago I set the rotary pump overpressure at 9. The new gadget shows 8 bar, but I'll leave things be.

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