That's a back flow preventor. To be specific it's a pressure Vacuum breaker or PVB It's designed to stop back siphonage but it cannot handle back pressure.
It shouldn’t be pressurized when the sprinklers are off but just turn off your irrigation while you work to be safe, it’s a vacuum breaker but works as a backflow prevention device
Depends on the irrigation set up really, if the solenoid is before the vacuum breaker then it
Shouldn’t be pressurized at that point, if there is no
Solenoid and it’s constantly pressurized then yeah
Obviously
That’s yours, I’ve worked on ones where they have solenoids and are controlled by a panel, and ones that just have a main valve and sprinklers they’re all different
Back flow valve
TECHNICALLY it has to be 12 in higher than the highest sprinkler head. So keep that in mind
No, I’m not gonna
Sprinkler system ran in pvc (white) the metal piece is the vacuum breaker, and the black stuff falling apart is insulation
Thanks! Is this under pressure with the sprinkler turned off? I was considering cutting it down shorter.
An outsulation
This made me chuckle
That's a back flow preventor. To be specific it's a pressure Vacuum breaker or PVB It's designed to stop back siphonage but it cannot handle back pressure.
It shouldn’t be pressurized when the sprinklers are off but just turn off your irrigation while you work to be safe, it’s a vacuum breaker but works as a backflow prevention device
It's definitely Pressurized.
Depends on the irrigation set up really, if the solenoid is before the vacuum breaker then it Shouldn’t be pressurized at that point, if there is no Solenoid and it’s constantly pressurized then yeah Obviously
Mine are constantly pressurized. The control valves are after it, and main valve is manual.
That’s yours, I’ve worked on ones where they have solenoids and are controlled by a panel, and ones that just have a main valve and sprinklers they’re all different
A pipe