DC 12000l/h Water Preasure

Hmmm... I am not great with physics, so I might be wrong... I'd assume you'd be able to take the static head height of that pump (the head height at which it can no longer pump water) and use that height divided by 10 (10m height of water =1bar). So if your pump can ouch water to a height of 10m, it can push 1bar... 5m head height = 0.5bar....

Can someone please confirm whether I'm a genius or an idiot....
 
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Pressure = rho x g x h (pascals)
= (density of fluid in question) x 9.81 (gravitational acceleration at sea level on earth) x head height (in metres) - units = pascals
You can then just convert Pascals to bar on Google
 
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Brentch is correct every 10m = 1bar pressure but not always practical to measure - need a long pipe and ladder.
 
DC pumps handles back pressure a lot worse than AC pumps. They seriously do not like to be throttled. Use the biggest return line you can get that fits. Least amount of elbows, If you can get away with no elbows, so much the better.

As for the question, 12000L/h DC compared to an AC pump will deliver less into your tank on the same setup due to back pressure. Yet, DC pumps win hands down on power consumption.
 
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