Dual check valves from T&S Brass are working double time to prevent back flow of non-potable water into the fresh water line. If one check fails during use, another is on board ready to stop siphoning.
T&S Brass B-0975 Vacuum Breaker, Dual Check, 3/8" NPT
T&S Brass B-0975-GH B-0975 Vacuum Breaker with Garden Hose Adapters
T&S Brass B-0977 Vacuum Breaker, Dual-Check, Adapters Included For 034A Application
