What Means Anti-Siphon

Definition of antisiphon : designed to prevent the emptying of a sanitary trap because of difference of pressure.

Is anti-siphon the same as backflow preventer?

An atmospheric vacuum breaker, also known as an anti-siphon valve, stops back siphonage with a floating disc. … AVB’s can be plastic or brass and either manual or electric. Unlike other backflow preventers, AVBs are installed on each zone of the irrigation system, immediately after the zone control valve.

Do you need anti-siphon valve?

An anti-siphon valve is an essential irrigation part that should not be left off your supply list. If you want to keep your drinking water safe while providing yourself with peace of mind then an anti-siphon valve is just what you need.