Watts 3/8 in x 1 3/4 in Anti-Siphon Vacuum Breaker, NPT Connection Type - LF288AC-3/8" Between Wall Compartments Dedicated water collection reservoir eliminates

Dedicated water collection reservoir eliminates water from collecting on the floor resulting in reduced maintenance

Counterbalanced spindle automatically returns to original position

but you can use types that are 2-1/2 inches to 3-1/8 inches in depth by adding the Internal Towel Tray Adapter Kit (part number 5262-25)

they accept coupling plugs (nipple or male ends) to connect tools to air

Watts 3/8 in x 1 3/4 in Anti-Siphon Vacuum Breaker, NPT Connection Type - LF288AC-3/8" Between Wall Compartments Dedicated water collection reservoir eliminatesPrevents back siphoning of polluted water into potable water systems. Corrosion resistant forged brass construction.