The Orbit 57623 anti-siphon sprinkler valve features a -inch FPT (Female Pipe Thread) connection. With a solenoid, this Orbit sprinkler valve works with many different automatic sprinkler systems. Its anti-siphon construction is ideal for ensuring dirty water does not back up into your drinking water. It is easy to use and reliable to guarantee many years of dependable lawn watering. This valve can also be used to replace sprinkler valves that may have worn out or become damaged. If you need to fix sprinkler valve and get a new one, the Orbit 57623 is the anti-siphon automatic sprinkler valve for you. Features and Benefits: Has -inch female threading, Replaces worn out and damaged anti-siphon sprinkler valves, Anti-siphon feature ensures that dirty water will not back up into your drinking water, Has high-quality construction that promises many years of excellent garden irrigation.