That is also hard for me to believe, but if your machine has no OPV, maybe it does something weird for an exhaust valve, too... Any way you could post a picture of that? Sorry we're not much help here... I've never seen a machine with no expansion valve of any kind. Additional:

I don't think it matters for performance as they are hardly high rpm parts. There are however differences between the original LSM groups and the modern clones. I know the prices are crazy for LSM parts compared with the clones but it is worth going original if you have an LSM group. That may not apply to a

Do yourself a favor and try some Saka Caffe Gran Bar from CantinaCoffee.com I don't think you will be disappointed!

Haha, I see what you did there.. In other news, I have a feeling that it might be a bad de-aerator/priming valve. Mine is plastic and old, so I went ahead and ordered the "replacement brass valve from Chris' Coffee". Fingers crossed!

I'm beginning to realize this myself. I'm in NYC no just recently was near a roaster which doesn't deliver doesn't sell online but is accessible and tried theirs. I have to say it's absolutely the beans and roast level. The one I'm talking about is Arabica% but the blend they use for espresso roasted onsite in some

coming from 1z kpro. quite a heft. the pearlish white looks nicer close up in life. {image} {image} {image}