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Hunter 518905SP 3" ICV Filter Sentry Diaphragm Assembly

Hunter 518905SP 3" ICV Filter Sentry Diaphragm Assembly

Brand: Hunter
Save 28%
$71.08
$51.53
SKU 518905SP

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Replacement diaphragm assembly designed for Hunter 3" (80 mm) ICV valves equipped with the Filter Sentry mechanism. This OEM replacement part (P/N 518905SP) restores reliable sealing and flow control for commercial and residential irrigation systems. Engineered for compatibility with Hunter ICV service procedures, the diaphragm helps maintain consistent valve timing, reduces water waste, and extends overall valve life when installed as part of routine maintenance.

  • Direct-fit replacement for 3" (80 mm) ICV valves, including ICV-301 models.
  • Works with the Filter Sentry system to protect valve internals from debris.
  • Fabric-reinforced EPDM diaphragm construction for long-term durability.
  • Restores proper valve operation and leak-free sealing when replacing worn diaphragms.
  • Easy field service: bonnet access and common tools allow quick installation.
  • OEM part with Hunter SKU 518905SP and manufacturer compatibility.

Keep a spare diaphragm on hand for routine maintenance and minimize downtime. When replacing, inspect the valve seat and Filter Sentry screen for debris and replace any worn components. For installation guidance, detailed part lists, and dimensional drawings, consult Hunter product documentation (downloadable from the manufacturer) or contact a qualified irrigation professional.

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Frequently Asked Questions

What valves is this diaphragm compatible with?
Fits Hunter 3" (80 mm) ICV valves, including ICV-301 models and other ICV valves equipped with Filter Sentry.
How do I know when to replace the diaphragm?
Replace if the valve leaks, cycles irregularly, or shows reduced flow. Inspect the diaphragm for cracks, tears, or deformation.
Can I install this diaphragm myself?
Yes. The ICV design allows field service — bonnet access and common tools make replacement straightforward; follow Hunter instructions.