Success! I had read the first 6 pages or so of this thread while doing PVC overflow research. I made one and it seems to work (in a test bucket at least!). At first it didn't work well, but once I added the hole with the air tubing and check valve and sucked the air out via the tubing everything seems to be working fine. I am letting the PVC cement cure overnight as well as allowing me to test a multi-hour power outage.
I made mine out of 3/4" as I expect this to a be a semi low-flow application. No noise when testing w/ the bucket. I will be working on a different strainer/intake next. |