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Close-up of Hunter 461503SP rubber diaphragm assembly for 1-inch IBV Filter Sentry irrigation valves; OEM replacement part

Hunter 461503SP Diaphragm Assembly for 1 in IBV Valves

Brand: Hunter
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$47.44
$35.58
SKU 461503SP

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Hunter OEM diaphragm assembly (461503SP) designed for 1 in ICV/IBV valves with the Filter Sentry® mechanism. This direct-fit replacement restores reliable sealing and control in irrigation systems and is made to Hunter specifications for long-lasting outdoor use.

  • Direct-fit OEM replacement for 1 in IBV/ICV valves with Filter Sentry mechanism (fits IBV-101G, IBV-151G, IBV-201G).
  • Durable rubber diaphragm engineered to resist wear, provide consistent sealing, and reduce leaks under normal operating conditions.
  • Simple installation: service the bonnet, seat the diaphragm correctly, and reassemble—no special tools required for routine replacement.
  • Compatible with standard 1 in connections and intended for use in Hunter brass IBV valves equipped with Filter Sentry.
  • Keeps irrigation systems operating efficiently by restoring valve responsiveness and preventing unintended flow.

Keep a spare 461503SP on hand for fast field service and minimal downtime. If you’re unsure about compatibility, refer to your valve parts list or the Hunter product documentation.

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Frequently Asked Questions

What valves is the Hunter 461503SP diaphragm compatible with?
Fits 1 in IBV/ICV Filter Sentry valves. Direct-fit for IBV-101G, IBV-151G and IBV-201G brass models.
How do I install the 461503SP diaphragm assembly?
Depressurize the valve, remove the bonnet, seat the new diaphragm, then reassemble. No special tools needed for routine service.
When should I replace the diaphragm in my IBV valve?
Replace when you see leakage, cracking, or loss of valve control. Lifespan varies with water quality and use—inspect periodically.

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