Hendrickson - Model J10 -Hose Bibb Vacuum Breaker

The J10 Hose Bibb Vacuum Breaker prevents backsiphonage through the exterior hose bibb connection. Back-siphonage can occur whenever a negative line pressure (vacuum or partial vacuum) is present that causes the reversal of the normal line flow. The use of the J-10 Hose Bibb Vacuum Breaker greatly reduces the possibility of backsiphonage and protects the potable water supply from contaminants that may be present in the hose line or irrigation system.