G1/4 fitting electric stopcock???

[Jassioma]

Does anyone know about an electric stopcock with 1/4 fittings for a water cooling loop? I want to make a board controlled automated loop and i would like to have a backup pump system in case the primary one fails, but i dont seem to find any decent electric stopcock that wont mess up my cooling liquid, looks sorta nice and has 1/4 fittings, anyone can help? i would really appreciate it!

[For Science!]

https://modmymods.com/alphacool-2-2-way-high-flow-solenoid-valve-17355.html

 

Something like this? my understanding is that a stopcock is basically a ball valve 

[For Science!]

8 hours ago, Jassioma said:

 

But honestly, if you want a safe guard redundancy pump, having 2 in serial will probably be easier and improve day-to-day operation though 

[Jassioma]

@For Science! Thanks, also, i prefer to use them in parallel as a second that automatically rotates which pump is working after a period of time via an arduino mega, because since i have to make way long mechanical simulations of designed parts, which are very complex and can take days long, so i need the system so it can rotate the pumps so they dont die in the middle of the simulation, and also to detect if one fails so it can intermediately switch to the other one and close the dead loop so it doesn't looses pressure

[AnonymousGuy]

I've had D5 pumps running 24/7 for years and never fail.  They're incredibly stout and their 5.5 year MTBF I'd say is pretty accurate.

 

As said above if you want redundancy run 2 pumps in series and it wouldn't matter if one of them failed.

[For Science!]

3 hours ago, Jassioma said:

-snip-

Its entirely up to you, but as @AnonymousGuy correctly points out, a good pump like a Laing/Xylem D5 is rated for 50,000 hours non-stop operation, and so is not the thing that would die over a couple days. While I'm not an expert in these pumps, my gut feeling would be that turning them off and on periodically is probably worst for them in the long run (really, gut feeling, no idea, so don't chastise me)

 

Parallel pump configurations provide little to no benefit in performance and also suffer drastically if one pump fails, whereas serial configurations gain a lot of head pressure and suffer little penalty if one was to fail. Would deifnitely recommend going for a serial dual-pump config unless if you specifically want to design the controller (And that is the prime objective, rather than a practical fail-safe measure).

 

https://martinsliquidlab.wordpress.com/2011/04/26/pump-setup-series-vs-parallel/

 

[Jassioma]

was not actually looking for any performance improvement, but as a safety measure, since i wanted it to make it automatic, also 2 serial pumps is too much noise, at least for me haha