3/6/2024 0 Comments Bean animal overflow![]() ![]() ![]() i have the airline tubing pinched in the overflow grate too, so if water level rises it will plug and create a siphon in case of emergency. on 2nd drain I run a T with a 90 at the end turned up and the top of the T has a cap on it with a hole drilled in it with airline tubing to further silence the drain. When running full blast, the 2nd drain has some flow going down it but nothing crazy. lower down i have the main drain connected to a valve to adjust flow. I run a two drain overflow and dont run any pvc on the main drain in the overflow box, (got the main drain outlet circled in red in the pic). The elbows without a airhole might also create airblocks preventing the 2nd from drain from working? Like others have said, think the elbows would cause issues, likely getting a siphon going in the 2nd drain that then breaks siphon as the water level drops, then water level rises, siphon forms then breaks, repeating again and again. It never restarted and just gurgled all day.Īny ideas from those that run one what I'm doing wrong and how to correct it? Today is the water level in the overflow dropped low enough that the siphon was broken. I don't have the hole drilled in the elbow of the secondary, and can't figure out how it would help or if t's really needed.Įarlier in the week the water level came high enough to enter the emergency overflow, but I never adjusted the gate valve and it seems like the secondary drain never kicked in. The return pump is DC and adjustable and I have it dialed way down so it won't go over the rating of the overflow. The pencil in the second picture is about the water level I think it should be at when running right. Both drains have their ends about 2" under water in the sump. ![]() The middle drain, I assume, picks up any excess from the primary as sort of a check valve to limit adjustments. The primary drain on the left has a gate valve to adjust flow. First picture is essentially what the overflow box looks like with the approximate heights of each. What you're really after in order to make it quiet is perfect laminar flow along a surface.īTW - the BeanAnimal overflow is a really good design.I can't get this thing working right and looking for some suggestions. If you add slots on top of your current weir that will almost certainly make it noisier by raising the water level slightly in the DT and adding turbulence. If you cut slots, that would accomplish the same thing as #1 (by lowering the water in the tank some) but can add turbulence to the flow into the overflow box that could end up making it noisier (or not. (You can play with the effect of this by finding the spot with the largest stream of water and sticking your finger in at an angle so that the water follows your finger - to see the effect it can have.) Give the water a sloped surface to "stick" to via surface tension so that it doesn't splash down - getting this to work is tricky and you have little space for it. Decrease the rate of flow through your sump/filter (which will decrease the amount of water going over the weir and possibly allow the water to "stick" (surface tension) to the side of the overflow box without breaking away and splashing.ģ. (Yeah, I know, that means modifying your standpipes. Raise the water level inside the overflow box so that the water flowing over doesn't fall as far. This is a weir-type overflow (as opposed to the slotted sort).ġ.
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