![]() It also isn’t a siphon, so when it becomes active, you will be able to hear that there is an issue with the main drain, but that doesn’t mean the emergency drain pipe doesn’t pull its weight. The emergency drain sits at a higher level which means it won’t be used unless there is an issue with the main drain. If the main drain pipe becomes clogged or restricted for some reason, there is still an emergency drain pipe available. The water then works with gravity to drain into the sump, where it will eventually return back to the tank. The full siphon is created by restricting the flow of the main drain. Herbie overflow avoids that problem by using a siphon to help drain the main standpipe. The reason is that the Durso only has one pipe, which allows both water and air to force their way through, causing the obnoxious gurgling sound. One of the biggest draws to this design of overflow is that the Herbie style can run near-silent, unlike the Durso. It almost makes you want to popularize your own design in the hobby just to have your name branded in history. People loved the design, and eventually, the name of the forum member became the name of the overflow design. The design is a great way to ensure that your tank won’t overflow while running quietly this design was popularized by a forum poster who mentioned his setup. One of the standpipes is the main drain to the tank, while the other is an emergency drain. You could probably do something similar and drill a hole in the elbow on your 2nd drain and stick some airline tubing in it.Put simply the Herbie overflow is made up of 2 standpipes. 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. I can't get this thing working right and looking for some suggestions.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |