Orbit 57624 Sprinkler System 1-Inch FPT Anti-Siphon Valve

Durable, noncorrosive plastic construction. Prevents contaminates from entering household water supply. Adjustable flow control stem. Unique balanced diaphragm design. Safe, low voltage solenoid. Internal bleed for manual operation. Sealed solenoid with low power consumption. Body and lid are molded with heavy-duty (pipe fitting grade) ultra violet-protected PVC (polyvinyl chloride) that meets NSF 14 standards. Molded thermoplastic elastomer diaphragm (NSF) 61 listed. For outdoor use with cold water only.
 
Durable non-corrosive construction
Adjustable flow control stem
Bleed screw for manual operation
Keeps contaminated chemicals from entering the household water supply
Safe, low voltage