Reminder To Install Pressure Limiting Valves

The Victorian Building Authority (VBA) has seen an increase in complaints where the licensed plumber has failed to install a pressure limiting valve when it was required.

Licensed plumbers are reminded it is mandatory to install a pressure limiting valve when the maximum static pressure at a property exceeds 500 kPa, as detailed below:

  • AS/NZS 3500.1:2021, clause 3.3.4 states that water at any outlet, other than a fire service outlet within a building shall not exceed a static pressure of 500 kPa.

Pressures above 500 kPa can result in:

  • Failure of piping and appliances, leading to property damage.
  • Excessive noise in the water supply system (water hammer).
  • Excessive water usage.
  • Voiding of appliance warranties and property insurance.

When non-compliance is identified by the VBA, the licensed plumber must return to site to ensure compliance is achieved.

Where damage at a property has occurred due of non-compliance, it may result in a claim on the responsible plumber’s insurance.

/Public Release. View in full here.