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JTV/AS and JTV/ASF Series

Anti-Siphon Jar Top Sprinkler Valves

Rain Bird’s Jar-Top Anti-Siphon valves combine the newest in Jar-Top technology with the reliability of anti-siphon protection.  The Jar-Top bonnet quickly screws on without using any tools.  This allows you to easily access the diaphragm for effortless maintenance and cleaning. 

Rain Bird manufactures only the highest quality Anti-Siphon valves. Use Anti-Siphon valves in locations where the use of a pressure vacuum breaker (PVB) or doublecheck valve is not required by city codes. Check your local city codes to determine what type of valves are required.

Anti-Siphon valves are installed above ground and will prevent back flow if properly installed. Anti-Siphon valves should always be installed at least 6” above the highest head on the valve line, and should never have another valve installed further down the line from the main valve. All of our Anti-Siphon valves work with any standard sprinkler timer.

  • Easy cleaning and maintenance with one-piece jar-top lid.
  • Rain Bird exclusive fail-safe design.
  • External bleed to manually flush system of dirt and debris during installation and system start up.
  • Heavy duty, professional design for a life-time of trouble-free operation.
  • Flow control models regulate the flow of water to sprinklers to avoid misting.
  • Operates automatically with any standard 24 volt sprinkler timer.
  • Vacuum breaker prevents backflow contamination to keep drinking water safe.
  • Meets I.A.P.M.O. listing specifications.

3/4" female pipe thread (FPT)
inlet and outlet

1" female pipe thread (FPT)
inlet and outlet


3/4" FPT inlet and outlet,
with flow control

1" FPT inlet and outlet,
with flow control