High Water Pressure in Cheltenham
Cheltenham sits in Melbourne's southern bayside corridor, and parts of the area — particularly near elevated sections of the mains network — can experience incoming water pressure significantly above the 500kPa maximum recommended by AS/NZS 3500. Properties without a pressure limiting valve are exposed to this pressure at every tap, fitting, hose connection, and appliance in the home.
The damage from high pressure is cumulative and often invisible until something fails. The most common failures we see in Cheltenham properties with unregulated high pressure are: burst flexible hoses under sinks and behind washing machines (a leading cause of major internal flooding), failed hot water system pressure relief valves that discharge constantly, water hammer on tap close, and premature failure of ceramic disc tap cartridges.
About This Installation
The photo shows the completed installation on the exterior wall of a Cheltenham dual-occupancy property — two meters (one per dwelling) with a new brass PLV fitted to the incoming supply before it splits to each unit. Installing the PLV upstream of the meter split means both dwellings are protected by a single valve, which is the most cost-effective solution for dual-occupancy properties.
The PLV is set to 500kPa, which is the maximum recommended working pressure under Australian plumbing standards. This reduces the mains pressure — which was measured at over 700kPa on this property — to a safe operating level before it reaches any internal plumbing.
Signs Your Cheltenham Property Has High Pressure
- Taps splash or spit aggressively when first opened
- Water hammer or banging when taps close quickly
- Hot water system PRV dripping or discharging regularly
- Flexible hoses under sinks feel stiff and hard when pressurised
- Unusually high water bills despite normal usage — pressure pushes more water through fixtures per minute
The Fix Is Simple and Permanent
A pressure limiting valve is a set-and-forget solution. Once installed and calibrated, it requires no ongoing maintenance other than a periodic inspection every few years to confirm it's holding its set point. We install Reliance and Honeywell PLVs, both of which are approved for Australian mains water applications and carry a 5-year manufacturer warranty. The installation itself typically takes 1–2 hours.
High Pressure or Burst Hose Risk in Cheltenham?
A PLV is one of the best-value investments you can make in your plumbing. Fixed-price supply and install, same week.