Rainbird Brass EFB-CP Reclaimed Series Electric Contamination Proof Valve, 1"/24 VAC 1 in. (26/34) Brass Valve Normally closed, reverse flow design ensures valve will fail in the closed position if a tear or rip in the diaphragm occurs Prevents flooding, water waste and landscape damage Slow closing to prevent water hammer and subsequent system damage One-piece solenoid design with captured plunger and spring for easy servicing - Prevents loss of parts during field service