Rain Jet Anti-Siphon Valve Leaks: Replace Valve Top or Internal Plunger

Two Valves Leak at Top Knob; One Leaks at Cap When System On

Home Depot carries Rain Jet valves. Options:

Buy a complete new valve and replace it entirely.
Or remove the top (screws), replace just the top assembly.
The cap leak: unscrew cap, replace the internal plunger. Minor seep after shutdown is normal; leak during operation is not.

Irrigation: Anti‑Siphon Valve Leaks – Install Inline Valve Instead; Rain Jet RU711 3/4" Valve Leaks Through Cap—Diaphragm Access; Replacing Obsolete Rain Jet Valves: Compatible Options; Sprinkler Head Works Manually but Not Electrically – Bad Solenoid; Rain Bird Anti-Siphon Valve Leaks at Cap Assembly; Fixing a Leaking Orbit Anti-Siphon Valve: Plunger Inspection Guide; Finding Parts for Obsolete Rain Jet 7/8" System; Rain Jet Valve Solenoid Replacement: Universal or Top Swap; Rain Dial RD-600: Zone 2 Stops Early, Zones 3-4 Don't Run—Controller or Transformer?; Orbit Anti-Siphon Valves Cycle On/Off: Pressure Reducer Placement and Voltage Check

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