Pressure regulators control and reduce the pressure entering your system to the recommended operating pressure of the drip or micro sprinkler system.
The pressure regulator, will reduce the pressure only when water is discharged from the system.
The pressure regulators are only designed for use in your irrigation systems and should be installed after your filter. Choose the correct thread (hose or pipe).
The pressure regulators should never be installed on a mainline where they are under constant pressure. In this situation, they need to be installed after the valve.