PRV
A PRV leak is small hardware with building-sized consequences.
The pressure-reducing valve sits near the incoming water. A weep at the bell, a failed diaphragm, or pressure that is too high can wet a mechanical room and stress every fitting downstream.
Look at the incoming water assembly, not only the latest pinhole.
If several suites report failed supplies in a short period, pressure belongs on the list.
A wet PRV body is not a ceiling stain downstairs, until it is.
Water from the mechanical room can travel. Photograph the valve and the floor.
Do not crank the screw as a test.
Pressure adjustments are a building-operator job. Guessing can make more leaks.
Questions people ask
Does high pressure cause pinholes?
It can contribute to failures. It is not the only cause. Log pressure facts beside repair history.
Can ProShield set our building pressure?
ProShield can help investigate water events. Changing a PRV is a plumbing-operator task with building authority.