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.

How Does An Anti-Siphon Valve Work?

EBW Anti Syphon Valve

Rain Bird Anti-Siphon Valves: Basic Operation

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OPW 199ASV Anti-Siphon Valve

Hunter 1 In. Anti-Siphon Valve - Baller Hardware

Ferguson Brass Anti-Siphon Valve with Union 3/4 | A466075

850DIAS (Anti-siphon) - Superior

Boat Anti-Siphon Valve Fitting, 3/8 x 5/8 x 2 3/8 Inch

How to Fix Anti Siphon Valve on Faucet