What is the purpose of long HX flushes? - Page 4
- jesawdy
- Posts: 1547
- Joined: 18 years ago
Eric, did you order a complete assembly? What did it it set you back?erics wrote:A potential solution to "long" hx machine flushes - this is the infamous Faema adjustable thermosyphon valve.
Jeff Sawdy
- erics
- Supporter ★
- Posts: 6302
- Joined: 19 years ago
Jeff -
About $127 but it is a rather nicely machined valve. Unfortunately, the only way the end user can buy this valve is as an assembly.
About $127 but it is a rather nicely machined valve. Unfortunately, the only way the end user can buy this valve is as an assembly.
- Randy G.
- Posts: 5340
- Joined: 17 years ago
My naivete notwithstanding in this area, but it would seem to me that it would be a simple matter for the manufacturer to design in a wax pellet type thermostat (as in a car) or possibly a bimetallic spring that opens and closes a small shutter door in the brewhead to regulate the thermosyphon flow. An external screw would make it adjustable as well. This seems a better solution since it would be sensing the brewhead temperature itself.
EspressoMyEspresso.com - 2000-2023 - a good run, its time is done
- shadowfax
- Posts: 3545
- Joined: 19 years ago
Randy, that idea has really been intriguing me. It seems like you really ought to have your cake and eat it too, with an HX, with a valve on the thermosiphon that simply almost closes as the water in the pipe gets too hot, but opens all the way when the water is cool. This could, I would think, easily be designed so that your recovery is fast (the disadvantage to a restrictor), but also such that your grouphead idles as brew temperature, keeping the flushes short.
Honestly, though, my irritation with wasting water on big flushes notwithstanding, I care a lot less than someone that doesn't have a plumbed in driptray...
Honestly, though, my irritation with wasting water on big flushes notwithstanding, I care a lot less than someone that doesn't have a plumbed in driptray...
Nicholas Lundgaard
- mhoy
- Posts: 1138
- Joined: 16 years ago
Connect a bimetallic spring (or perhaps a PID) to the copper of the HX loop. Use this to enable a relay to open/close a solenoid on the HX loop. Not as nifty as a saturated group or an actively heated group head, but there are a lot of thermosiphon systems out there.
Mark
Mark
- Randy G.
- Posts: 5340
- Joined: 17 years ago
I don't need a plumbed drip tray. I have a wife. ..I hope she doesn't read this forum!shadowfax wrote:Honestly, though, my irritation with wasting water on big flushes notwithstanding, I care a lot less than someone that doesn't have a plumbed in driptray...
EspressoMyEspresso.com - 2000-2023 - a good run, its time is done