If your tap mixer doesn’t have a one way valve attached this Standard Vacuum Breaker is compatible with basins with the square hole on one side, where the sprayer hose fits. It is a one way valve that prevents contaminated water from mixing with the fresh city water supply. This unit prevents perm solution, color chemicals, and neutralizers from going back into the city’s water. A vacuum breaker is required by some councils based on local plumbing codes. Please consult your plumber for local building codes.
