PVB stands for Pressure Vacuum Breaker. It is a type of backflow prevention device used in irrigation and plumbing systems to protect against contamination of potable water by preventing water from flowing back into the supply lines from an external source.
PVBs are typically installed on the main water supply line, and they work by allowing water to flow out of the system while preventing it from flowing back in. They are designed to open and release pressure if the downstream pressure drops, and to close and hold a vacuum if the downstream pressure increases. PVBs are required by local plumbing codes in the Las Vegas area.
PVB repair refers to the maintenance and fixing of any issues with a Pressure Vacuum Breaker (PVB) device. These repairs can be performed by a professional irrigation technician or by a homeowner with the proper tools and knowledge. Common repair tasks include:
- Replacing damaged or worn parts, such as the spring, poppet, or seats
- Adjusting the system's settings, such as the pressure and vacuum settings
- Troubleshooting and resolving problems with the system's performance, such as leaks or improper operation.
- Testing the PVB to ensure it is functioning properly.
It is important to ensure that the PVB is operating correctly to prevent contamination of the potable water supply and protect the health of the public. If the PVB is not working properly, it should be repaired or replaced as soon as possible.
- Verify all backflow prevention devices are installed and certified by a certified backflow protection specialist.
- If property has irrigation, verify that pressure vacuum breaker is installed a minimum of 12 inches above all downstream piping.