Jeffco 388-ASC Vacuum Breaker Anti-Siphoning Back-Flow Preventer
Anti-Siphon Vacuum Breaker for Jeffco Bowls, but fits most brands.
Frequently required by code, the 388-ASC vacuum breaker prevents the back-flow of unwanted water into the drinking water supply.
The chrome-body vacuum breaker comes with gasket, 1/4" brass nipples, and 20" EDPM connecting hose.