What does PVB stand for in irrigation terminology?

In irrigation terminology, PVB stands for Pressure Vacuum Breaker. This device is an essential component in backflow prevention systems. It helps to protect potable water supplies from contamination by preventing the backflow of water.

The operation of a Pressure Vacuum Breaker relies on maintaining a proper pressure differential. When the water pressure in the irrigation system drops (for example, during a system shutdown), the breaker allows air into the system to prevent back siphonage. It features a check valve and an air inlet, working together to ensure that water cannot flow back into the main supply.

By incorporating a PVB into an irrigation system, you ensure compliance with safety regulations and help maintain the quality of drinking water. This is crucial for both residential and agricultural irrigation setups, where cross-contamination is a significant concern.