Fnpt Brass Anti-siphon

Automatic anti-siphon valve prevents contaminants from entering household water supply. Durable brass valve is easily installed for years of durable trouble free service. Works with standard residential 24 volt sprinkler systems. Precise flow control adjustment reduces sprinkler fogging and over spray, and the manual on/off option and bleed screw make testing and flushing your sprinkler system hassle free. High quality brass construction.