Anti-Siphon Valve

Anti-Siphon Valve for bleeding air from irrigation supply tube to prevent a siphoning effect after the drip system turns off. Best positioned at top of the waterbutt, connected to a Tee Piece.

Universal Valve Co. Model 403 - Anti-Syphon Valve, AST Valves, 403

Anti-siphon valve repairable? : r/Irrigation

Anti-Siphon Valve Basics

3 Plast-O-Matic RVDT300T-PV - Up to 30% at

Champion CL466-075 Classic Automatic Anti-Siphon Valve 3/4 With Union - Quality Plumbing Supply

Used to prevent marine fuel tanks from siphoning if a hose were to leak or break.

Aluminum Anti-Siphon Valve 1/4

Morrison Brothers Co.

Anti-Siphon Valves Preferred Utilities Mfg

Anti-Siphon Valve Basics

Orbit - 57623 - 3/4 FPT Anti-Siphon Valve — Big Frog Supply