Hunter AVB/ASV Anti-Siphon Valve Repair Kit — 3/4" & 1"

OEM Hunter AVB/ASV Anti-Siphon Valve Repair Kit designed to restore the anti-siphon section of compatible Hunter valves. Choose the 1" (fits ASV-101) or 3/4" (fits ASV-075) kit to replace worn caps, gaskets, and diaphragms without replacing the entire valve body. Each kit contains original-manufacturer-equivalent components built for durability and reliable performance in irrigation systems.

• Complete repair kit: replacement plastic cap, gasket, and diaphragm for the anti-siphon assembly.
• Available sizes: 1" kit (Hunter part 590306) and 3/4" kit (Hunter part 590307).
• Fits Hunter ASV-series anti-siphon valves (ASV-101 and ASV-075); not compatible with other brands.
• Restores proper anti-siphon function to prevent backflow and maintain system pressure.
• Simple swap: install with basic hand tools—no valve body removal required in most cases.

This repair kit is ideal for contractors and homeowners who prefer cost-effective maintenance using OEM-quality parts. Refer to the Repair Parts Diagram in the product documents for exploded views and part references. If you are unsure which size you need, check the valve model stamped on the anti-siphon housing or consult our support team for guidance.