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- Aug 8, 2015
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What I don't get is in their literature they say that the 6250 comes with a 1/3 HP motor. 1/3 HP is only 254 watts. This pump draws double that. Something is off....
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Head pressure is a little confusing. What it really means is that the back pressure on the outlet of the pump is equivalent to a certain number of feet of water column pressure. So 33 vertical feet of salt water exerts 1 atmosphere of pressure (14.7 PSI). So if you divide that out, each foot of head pressure is actually 0.445 PSI. So when you look at a chart all it is really showing is performance and power draws at a certain amount of back pressure on the outlet of the pump. Whether it is created from actual water column height, or from a ball valve being restricted down, the pump doesn't know the difference. So if you know what GPH you want, you just look at where that number crosses and read out the wattage draw. So with this pump, it is creating 2000 GPH at about 8.686 PSI, also known as 19.5' of head pressure, while drawing about 450 watts or 3.75 amps @ 120V.
Excellent information, thank you!
Dolphin at 450W or Barracuda at 237W. That's going to be more like a $240 difference in annual operating cost at my utility rate. I have found a used Barracuda locally for $200, and I think I will give it a try and see what my actual flow/power performance will be ....
Yea, but like I was saying. Something doesn't jive. They say they are using a 1/3 HP motor, but that it draws 500 watts. Then we have a forum member saying that his draws 2 amps, which would be more inline with what a pump running a 1/3 HP motor would be doing. Some information somewhere is wrong.
get a dc jebao. You won't be disappointed.
This is true variable frequency controlled 3 phase motors are efficient but I don't see the need for adjustable return pumps. Alternating 2 closed loop on a controller would be cool though.http://www.factorymation.com/Products/FM50_115V/FM50-101-C.html
This. It takes one of the 240V 3 Phase motors and converts it to run on a standard wall plug. It has a 0-10v input so you can hook it up to a controller. They make that exact same control in Nema rated enclosures. AKA rain and dust proof
i have 4 wave pumps that have been going two years, problems with power supplies but that was because i was stacking them and they were over heating.Haha you have got to be kidding me!? Don't waste your money on crap. Jebao make nothing but cheap crap that rarely lasts a year.
Aren't all of the DC pumps out now magnetic impeller pumps like the tried but true mag pumps.