3/4" Female threaded anti-siphon valve with flow control. Built-in atmospheric backflow preventer protects household water supply from possible contamination. Safe low-voltage solenoid provides long-lasting service. Flow control allows for precise adjustment after installation. Manual external bleed allows for operation with out electrical power. Double beaded diaphragm. Self-aligning bonnet. 18" solenoid lead wires for easy access and installation. Previously the RJ711.