An anti-siphon valve is a must for preventing toxics and other dangerous stuff from getting into a water supply. In fact, these valves are required by many municipal and government building codes.
If you are looking for an anti-siphon valve for drip irrigation, look no further than the Rain Bird anti-siphon valve available at DripWorks. These professional series Rainbird 24 volt AC anti-siphon valves are the only anti-siphon valves we have found designed specifically for the lower flow rates of a drip irrigation system. An in-line Rainbird valve, without an anti-siphon, is also available. Choose from 3/4" or 1" diameters. Call us toll-free if you have questions.
Note: The top of the valve should be at least 6" above the highest point in the irrigation system.