Pipe Line Venting
Pipe Line Venting
(OP)
There is a measured high discharge pressure / excessive piping loss vs. calculated (see attached - measured values in red) & believe it is due to air entrainment. It appears multiple vents only with vacuum check (no way for air to re-enter system) are needed (5 locations at risers. The vacuum check would prevent draining a high level north tank thru the vents.
The pump discharge pressure of 36 psi at 650 gpm agrees with the pump curve (system piping issue). The target for a worst case is 800 gpm at 76 ft.
I am looking for a consensus before adding the vents. Note there was one manual vent via a ball valve added already to the system but with no reduction in the system pressure.
The pump discharge pressure of 36 psi at 650 gpm agrees with the pump curve (system piping issue). The target for a worst case is 800 gpm at 76 ft.
I am looking for a consensus before adding the vents. Note there was one manual vent via a ball valve added already to the system but with no reduction in the system pressure.




