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Red and black anti-siphon fill valve kit with flapper

Korky

Korky 818Z Anti-Siphon Fill Valve Kit with Flapper TPE

SKU CH-9A63-T69JM

Anti-siphon fill valve kit with TPE construction and included flapper fits most toilet tanks and resists chlorine for a five-year warranty

  • Product typeAnti-Siphon
  • Anti-siphon design prevents back-flow contamination
  • TPE construction resists chlorine for longer seal life
  • Fits most standard toilet tanks for easy replacement
  • Includes Korky Plus flapper for complete repair
  • ASSE and CSA certified for code compliance

Universal Tank Fit

The Korky 818Z anti-siphon fill valve kit fits most standard toilet tanks and includes a Korky Plus flapper. Both components use TPE construction that resists chlorine degradation. The assembly meets ASSE and CSA standards and carries a five-year warranty.

Sustained Chlorine Resistance

Under continuous water exposure the TPE material maintains seal integrity and prevents premature cracking or warping caused by chlorinated supply lines. The anti-siphon mechanism continues to block backflow during extended refill cycles without performance loss.

Pre-Installation Checks

Verify that the existing tank opening matches standard dimensions so the valve seats correctly. Confirm local plumbing codes accept ASSE and CSA certified components before beginning the installation.

How it compares

Measured against everything we stock in Toilet Seats & Add-Ons, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 75% of the 427 comparable items (median $17.99).

Specifications

Product
Brand nameKORKY
Product typeAnti-Siphon

Questions about this item

How much power does the 818Z fill valve draw when it runs continuously?

The 818Z fill valve operates on water pressure alone and requires no electrical power, so it draws zero watts during all-day operation.

What existing plumbing must I already have for the 818Z kit to install and function?

You need a standard toilet tank with a 1/2-inch supply line and a compatible flush-valve opening for the included Korky Plus flapper to seal properly.

Will the 818Z anti-siphon valve work alongside the older metal ballcock and flush lever I plan to keep?

Yes, the 818Z replaces only the fill-valve assembly; it connects to the existing supply line and works with your current flush lever and tank hardware.

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