This Rain Bird irrigation valve is built for below-ground installations. Suitable use with any standard sprinkler timer, it operates electrically with a 24 volt timer or manually by turning the solenoid 1/4" counter-clockwise. The energy-efficient, low-power encapsulated solenoid features a heavy-duty construction that resists power surges. This inline valve has a manual bleed to clear debris. Made for water environments, it has a reliable, non-clogging design with reverse flow functionality that prevents leaks and flooding.