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Red and black TPE anti-siphon fill valve for toilet tanks

Korky

Korky 528Z Anti-Siphon Fill Valve TPE toilet accessory

SKU CH-BZRD-V4BJV

Anti-siphon fill valve made from TPE resists chlorine and fits most toilet tanks

  • TypeAnti-Siphon
  • Anti-siphon design prevents backflow contamination
  • TPE construction resists chlorine for longer seal life
  • Fits most standard toilet tanks for easy replacement
  • Meets ASSE and CSA performance standards
  • Backed by a five-year manufacturer warranty

Korky 528Z Anti-Siphon Fill Valve

The Korky 528Z is an anti-siphon fill valve designed for residential toilet tanks. It uses TPE construction that resists chlorine degradation. The valve fits most standard toilet tanks and meets ASSE and CSA standards. It is intended for homeowners or plumbers replacing a worn fill valve.

Installation and common issues

Installation follows typical fill valve replacement steps and requires basic hand tools. The TPE material offers flexibility during fitting. A common issue is debris in the water supply causing noise or incomplete shut-off; flushing the line before final tightening helps avoid this. Incorrect height adjustment can also lead to continuous running water.

Check before ordering

Verify that the existing tank opening matches standard fill valve dimensions. Confirm the water supply line connection type is compatible with the valve inlet. Ensure local plumbing codes accept ASSE and CSA certified components. The valve carries a five-year warranty from the manufacturer.

Highlights

  • Anti-siphon design prevents backflow contamination
  • TPE construction resists chlorine for longer seal life
  • Fits most standard toilet tanks for easy replacement
  • Meets ASSE and CSA performance standards
  • Backed by a five-year manufacturer warranty

Specifications

BrandKORKY
TypeAnti-Siphon

Questions about this item

How can I confirm the anti-siphon fill valve is working correctly after installation?

After installation, flush the toilet and verify the tank refills to the proper level without water continuously running into the overflow tube; the anti-siphon design prevents backflow into the supply line.

What comes in the box with the Korky 528Z fill valve and what must I purchase separately?

The package includes the fill valve unit constructed from TPE material in red and black; supply lines, mounting hardware or tank-to-bowl gaskets are not included and must be bought separately if needed.

Which version of the Korky 528Z should I choose for a standard residential toilet tank?

The 528Z model is a universal-fit anti-siphon fill valve made from chlorine-resistant TPE and certified to ASSE and CSA standards, suitable for most standard toilet tanks.

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