![]() You would also avoid getting a pump that is too large, needing throttling. This will help avoid the most common occurrence: a pump that is too small, for the job that needs to be done. With a little math using friction loss charts, the guesswork can be taken out of the equation. Most pump selection is based on opinion, guesswork, and rather idealized flow curves, that do not reflect real world performance of the pump once it is hooked up. Selection of the pump, is based on #1, #2 and #3: that being the job that needs to be done. What the drains will handle is not the job that needs to be done.Ģ: the configuration, size, number of and type of fittings in your return plumbing (pump to tank friction loss)ģ: how high do you have to pump (static head pressure) In order to "get the right pump to do the job," you first need to know what that job is. I am a newbie when it comes to this type of setup so I just want to make sure I get the right pump to do the job. My assumption was that the height of the weir would regulate the amount of flow, but perhaps it is just the amount of flow that can go through 1" plumbing. The basis for sizing the pump will be how much flow comes from a Beananimal overflow system using 1" bulkheads and plumbing all the way to sump. I am trying to size a pump to provide the most flow (with a little extra for future needs). Lets stick to the questions at hand, please. then water will start filling up the display tank and if you are lucky (or designed it properly) the return pump chamber in the sump will run out of water before the tank overflows onto the floor. If it can't handle that rate or gets clogged,etc. Since you said nothing about that (didn't state what pump you are using or GPH flowrate of not said pump nor what size plumbing) I can't answer if what you are doing is capable of handling the return pump flow.īut an overflow system (drain plumbing really) will experience the exact same flow rate going down it as your return pump is pushing up into the tank. Its about the drain/plumbing system you use with that box that will have a limit. If its not then you are going to have water all over the floor.Ī full coast to coast overflow box itself says nothing (basically) about how much water an "overflow system" can handle. So, the overflow is capable of dumping as much flow as the return pump can give?
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