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AFV-B Automatic Flush Valve - 17 mm Barb Connection

AFV-B Automatic Flush Valve - 17 mm Barb Connection

Brand: Hunter
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$16.47
$9.27
SKU AFV-B

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The Hunter AFV-B Automatic Flush Valve (17 mm barb connection) keeps micro-irrigation laterals clear by automatically flushing water, air, and debris at system startup. It is a compact, low-profile valve designed for easy installation and maintenance.

  • Flushes debris automatically at every system startup to reduce emitter clogging and maintain consistent flow.
  • Two diaphragm positions — low-flow (2 to 5 GPM) and high-flow (5 to 12 GPM) — accommodate a range of lateral demands.
  • Reliable operation up to 60 PSI (4.1 bar); suitable for most residential and commercial micro-irrigation systems.
  • Removable top for quick diaphragm access and service; diaphragm is reversible for alternate flow settings.
  • 17 mm barb connection fits standard drip tubing; flat, lateral-friendly profile helps resist grit and close reliably.

Install the AFV-B at the start of laterals or downstream of a filter for hands-off maintenance. Download the product cutsheet for installation dimensions and full specifications, and follow recommended system filtration to minimize debris.

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Frequently Asked Questions

What is the flow range and modes for the AFV-B?
Low-flow position 2–5 GPM and high-flow position 5–12 GPM; reversible diaphragm lets you choose between modes.
How should I install the AFV-B for best performance?
Install at lateral start or downstream of a filter; ensure system pressure is under 60 PSI and use recommended filtration.
How do I service and clean the AFV-B diaphragm?
Remove the top to access the diaphragm, inspect and rinse with clean water, and reverse the diaphragm for alternate flow if needed.