Quick Mill Silvano from Chris' Coffee - Page 10

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innermusic
Posts: 454
Joined: 14 years ago

#91: Post by innermusic »

The water returning from the OPV goes to back to the reservoir, which to me is a poor solution. Better to have it go to the drip tray. Other than that it's a decent machine, and a great buy for the money.
Steve Holt
Trent Hills, Ontario Canada
Vivaldi II, Macap MXK, Baratza Vario

_bm
Posts: 28
Joined: 13 years ago

#92: Post by _bm replying to innermusic »

That's IMHO a quite normal and straight forward solution. It's cold water from the OPV when it opens the valve. It is neither polluted nor stale and therefore still usable.

Why would you like to flood your drip tray consistently?

Regards
BM

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innermusic
Posts: 454
Joined: 14 years ago

#93: Post by innermusic »

I'd prefer to have unrecycled water to drink.
Steve Holt
Trent Hills, Ontario Canada
Vivaldi II, Macap MXK, Baratza Vario

Louis
Posts: 418
Joined: 15 years ago

#94: Post by Louis »

innermusic wrote:The water returning from the OPV goes to back to the reservoir, which to me is a poor solution. Better to have it go to the drip tray. Other than that it's a decent machine, and a great buy for the money.
There is a big difference between a rotary pump OPV (called an expansion valve) and a vibe pump OPV... On the former, only a few drops come out of it; it is usually drained to the drip tray. The pump keeps the set pressure by "recycling" water internally. On a vibe pump, that water rather escape through the OPV, and this is a significant amount of water! Diverting all this water to the drip tray would make no sense: it would be full after only a few shots... I think there was only one machine working this way (Duetto or Evoluzione?), and it was corrected in a later version.

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allon
Posts: 1639
Joined: 13 years ago

#95: Post by allon »

On my plumbed-in (flojet, really) Faema C-85, the opv is mounted on the inlet side of the pump, recycling water from the output side directly back to the inlet. Note there is a separate expansion valve that drains into the drip tray.
LMWDP #331

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