I'll try and keep this short but provide enough information.
City water irrigation system, 60 psi. Had water hammer on valves opening and closing.
I installed a PRV on the irrigation line that splits from the main. The main is in the basement, the PRV is outside after the pressure vacuum breaker. The PRV is set at 30psi. It stopped hammer on all the zones when the valves close.
In the front yard I have Hunter popup heads and installed check valves to stop leakage when the zone valve closes, trying to keep air out of the system. That has significantly reduce the opening hammer to a small pop from a cannon going off.
The backyard has Rainbird heads (installed post home build by a different company). The open hammer still exist so I need to replace the heads, Rainbird doesn't have an easy retrofit like Hunter.
Regardless of front or back or zone, when the water is running I hear a ticking sound somewhere in the wall near the main. It doesn't appear to be coming from either the house PRV or the irrigation PRV. The controller is putting out 29 volts constantly.
I checked once and the house pressure drops from 60psi to 40psi when the system is running. The flow rate into the house is 9 gpm, the zones appear to use about 5-6 gpm. The system runs in the middle of the night.
The house is 5 years old, new neighborhood.
Any thoughts on the ticking noise? Should the irrigation PRV be upstream of the vacuum breaker or does it matter?
Thanks for reading this long post, looking for any thoughts.
City water irrigation system, 60 psi. Had water hammer on valves opening and closing.
I installed a PRV on the irrigation line that splits from the main. The main is in the basement, the PRV is outside after the pressure vacuum breaker. The PRV is set at 30psi. It stopped hammer on all the zones when the valves close.
In the front yard I have Hunter popup heads and installed check valves to stop leakage when the zone valve closes, trying to keep air out of the system. That has significantly reduce the opening hammer to a small pop from a cannon going off.
The backyard has Rainbird heads (installed post home build by a different company). The open hammer still exist so I need to replace the heads, Rainbird doesn't have an easy retrofit like Hunter.
Regardless of front or back or zone, when the water is running I hear a ticking sound somewhere in the wall near the main. It doesn't appear to be coming from either the house PRV or the irrigation PRV. The controller is putting out 29 volts constantly.
I checked once and the house pressure drops from 60psi to 40psi when the system is running. The flow rate into the house is 9 gpm, the zones appear to use about 5-6 gpm. The system runs in the middle of the night.
The house is 5 years old, new neighborhood.
Any thoughts on the ticking noise? Should the irrigation PRV be upstream of the vacuum breaker or does it matter?
Thanks for reading this long post, looking for any thoughts.