Pressure Vacuum Breaker (PVB) Recommended Every 5 Years
PVB rebuild and visual inspection. Most pools will have a PVB installed on the water supply line where it exits your home. This valve is a safety feature that, when functioning properly, ensures that your pool water can never be siphoned back into your home’s water pipes and contaminate your drinking water. In the event of a loss of water pressure in your home, the pressure in your pool plumbing could exceed the pressure in your home’s water pipes. When this occurs, there is a back siphoning which could draw water from the pool or spa back into your home and cause serious contamination of the water, pipes and plumbing fixtures. It is not uncommon for house water pressure to drop if there is a high demand for water in an area. This can occur in the event of a fire, when hydrants are being used or if a water main breaks. To prevent this from occurring, a pressure vacuum breaker is installed at the point of connection to your house water. If there is a severe drop in water pressure in your home which creates a higher pressure in the pool plumbing, the valve in the PVB will seal causing the siphoned water to flood out from underneath the bonnet of the PBV. The water will go to ground rather than potentially contaminating your house water. The PVB rebuild replaces the bonnet and poppet assemblies as well as the check assembly to ensure that the check valve is fully functional and protecting your water supply.