-
David7773
Cheryl9296
The second option for such systems:
Author Ken Stockman
It's a pity that such a design is only applicable in the presence of a shaft.
Source.
April3499
Third option:
Ho Gurgle Buster
On the left fully open, on the right - closed.
.....................
The "inverted" Stockman overflow option + air intake.
Again, it can only be installed if there is a shaft.
Description in Russian here.
Erin
Double-barreled
P.S. Besides the "double" version, the "slim" design and construction of the water intake are also interesting.
George5104
Not only!
John3187
We mainly use Durso as this system has proven to be viable and the least troublesome to manufacture. The pipe narrowing is usually done with a ball valve.
James4342
Can I get a close-up photo of the device?
Mark
Aquas Way-x, ask him for it.