130 PSI- Irrigation system, water line in house
It will depend the material used, the diameter of the pipe, and the temperature.

What you want to know is what is the maximum working pressure of the material that was used. Most likely it will be higher then 130 psi. Some examples are:


Copper (type L &amp; K)
PVC
CPVC
PEX


Regardless, you will need a PRV. If it was me, I would install the new PRV on the line near the point of connection to the main. Then, adjust the PRV so that you have the desired pressure at the irrigation box.