Sprinkler anti siphon lid leaks heavily when turned ON- Zone does not work

Sprinkler anti siphon lid on my Champion brass irrigation valve leaks (heavily) when this irrigation Zone is turned ON & none of my sprinklers pop out and

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Sprinkler anti siphon lid leaks heavily when turned ON- Zone does

Sprinkler anti siphon lid leaks heavily when turned ON- Zone does

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Landscape Lighting - Irrigation Sprinklers

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I know these do something for the sprinkler system, but what do they do and is there anyway to hide it? My dad manually turns sprinklers on and off through this. My

Orbit Sprinkler System 1-Inch Anti-Siphon Control Valve 51023P… : Automatic Lawn Underground Sprinkler Systems : Patio, Lawn & Garden

Landscape Lighting - Irrigation Sprinklers