CROSS CONNECTION PREVENTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a cross connection preventing device capable of effectively preventing the cross connection of a sanitary facility apparatus. SOLUTION: In this cross connection preventing device preventing mixing of potable water with hot water or sewage on the sanitary facility apparatus discharging the hot water or sewage by using the potable water, one or two or more check valves for preventing the backflow of the sewage to the potable water are used for isolating them.