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.

Vetus Anti Syphon Airvent with Valve 13 - 32mm (Vetus AIRVENTV)

For controlling the flow of water while also protecting a culinary water system Combines a 24 VAC automatic valve with an atmospheric vacuum breaker;

Orbit Sprinkler System 3/4-Inch Auto Brass Anti-Siphon Valve 57065 (Brass Anti-Siphon Valve)

One-way anti siphon valve prevents fuel theft and fuel spillage Made of corrosion resistant aluminum Meets US Coast Guard regulations Thread: 1/4 inch

Seachoice Anti-Siphon Valve, 1/4 in. NPT, 3/8 in. Hose, Aluminum, Meets USCG Regulations

How Does An Anti-Siphon Valve Work?

Moeller Anti-Siphon Valve with Hose Barb

VPASU Anti-Siphon Valve Kit - 1/4 SAE, 3/8 SAE, 1/2-20

anti-syphon, Vented loop

Anti Siphon valve vented loop 1

Buy Lawn Genie L4010 Anti-Siphon Valve, 1 in, FNPT, 75 to 150 psi Pressure, 0 to 30 gpm, PVC Body

Anti siphon valve question [issue with gas tank] - The Hull Truth - Boating and Fishing Forum

Brass Anti-Siphon Valves With Union 3/4 Manual Control

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