Orbit 1 in. FPT Anti-Siphon Valve with 3/4 in. Reducer

The Automatic Anti-Siphon Valve checks back-flush and prevents contaminants from entering household water supply. The durable, non-corrosive plastic construction makes instillation easy and provides years of durable trouble-free service. As a universal valve, it works with residential standard 24 volt sprinkler systems. A manual on/off option and bleed screw make testing and flushing your sprinkler system hassle-free.