Hi, do you need to have a valve on the lower end initially to allow for filling of the pipe up to the check valve? Or did you have a cap over the end until it was full to get the siphoning action happening? Also,does the t piece at the high point help to create a venturi effect? Thanks,Andy.
Just a cap on the lower end. Once it’s full and the top of the T is capped off the lower cap is removed and it starts. No need for the Venturi, there is no reduction in diameter at this point to create that as such though the T would create a resistance on the upper side and could argue it created that effect in some form.
We just run this system until the water level is low enough to do the work required. It’s a good controlled release so that anything downstream can handle the flow just like any heavy rain event. This dam (18ML) filled back up in 48 hours once we were finished.
Hi, do you need to have a valve on the lower end initially to allow for filling of the pipe up to the check valve?
Or did you have a cap over the end until it was full to get the siphoning action happening?
Also,does the t piece at the high point help to create a venturi effect?
Thanks,Andy.
Just a cap on the lower end. Once it’s full and the top of the T is capped off the lower cap is removed and it starts.
No need for the Venturi, there is no reduction in diameter at this point to create that as such though the T would create a resistance on the upper side and could argue it created that effect in some form.
Can you tell the name of that valve using to this syphon???
It’s called a check valve. Works in one direction only
How long water can be out from this system
We just run this system until the water level is low enough to do the work required. It’s a good controlled release so that anything downstream can handle the flow just like any heavy rain event. This dam (18ML) filled back up in 48 hours once we were finished.