Fleck 1720 Brine Valve, 0.0 GPM

The genuine Pentair Fleck 1720 Brine Valve, configured here at the 0.0 GPM rating, is a key component of the brine system on compatible Fleck softeners. The brine valve controls the draw and refill of salt solution between the brine tank and the resin during the regeneration cycle, helping ensure the resin is properly recharged and the brine tank doesn't overfill.

Inside the Brine Cycle

During regeneration, the system draws concentrated brine from the salt tank, sends it through the resin to displace the hardness ions that have accumulated during service, and then refills the tank with a measured amount of water to dissolve more salt for the next cycle. The brine valve, working together with the air check, governs this draw-and-refill sequence. It opens to allow brine to be drawn down and then seals to prevent air from entering the system and water from continuing to flow into the tank once the correct level is reached. Proper function here is essential both to recharging the resin and to preventing brine-tank overflow that could flood the area around the softener.

• Genuine Fleck 1720 brine valve
• 0.0 GPM configuration
• Manages brine draw and refill during regeneration
• Works with the air check to seal the brine circuit
• Helps prevent overfilling of the brine tank
• Direct replacement for worn brine valve assemblies

If your softener is overfilling the brine tank, failing to draw brine, leaving standing water in the tank, or no longer softening despite cycling normally, the brine valve is a common point of failure. The seals and float mechanism inside can wear or stick over years of exposure to salt and water, leading to these symptoms. Replacing the assembly with a genuine 1720 unit restores reliable brine handling and protects against overflow. Confirm that the rating and configuration match your existing setup before ordering, relieve system pressure before servicing the brine circuit, and inspect the brine line, air check, and float for wear while you have the assembly accessible. Because brine handling is fundamental to recharging the resin, keeping this assembly in good condition is essential both to soft-water performance and to protecting the area around the softener from accidental overflow.