Pressure limiting valves regulate water flow through a multi-stage process: incoming mains pressure enters the inlet, passes through an adjustable spring mechanism, and exits at a preset reduced pressure to protect household plumbing. A Brisbane Northside homeowner called about significant water discharge at their meter, so our Master Plumbers Association technician traced the failure point in the sequence. The brass PLV we'd installed months earlier had developed a leak at the valve body itself, allowing uncontrolled water to bypass the regulation mechanism and flood the meter pit. Water pooling around the installation confirmed the valve's internal seal had failed, disrupting the entire pressure control sequence. We shut off the main supply, removed the failed unit, and installed a new pressure limiting valve with upgraded sealing components. Learn More about S&J Plumbing's guaranteed workmanship, backed by 30+ years combined experience and full warranty coverage so your system operates exactly as designed.