We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Korky 4030PK flush valve kit with flapper, white plastic components

Korky

Korky 4030PK Flush Valve Kit toilet accessory

SKU CH-5Y04-QJF0G

A manual flush valve kit with flapper for standard toilet repair and maintenance

  • TypeRegular
  • Manual flush valve kit includes flapper for complete repair
  • Korky brand trusted for reliable toilet parts
  • New condition ensures full performance from installation
  • Regular type fits standard toilet configurations
  • Model 4030PK identifies exact replacement kit

Korky 4030PK Flush Valve Kit

This Korky flush valve kit replaces the internal flushing mechanism inside a standard toilet tank. It is designed for homeowners or maintenance staff repairing a leaking or weak-flushing toilet. The kit includes the flush valve and flapper needed for the repair.

Included flapper ensures seal compatibility

The bundled flapper matches the valve seat to create a watertight seal without extra parts. Having both components in one package removes the guesswork of matching separate components. This combination restores proper flush performance in a single installation.

Verify toilet uses a regular flush valve

Confirm the existing toilet uses a regular-type flush valve before ordering. This kit will not fit toilets requiring proprietary or non-standard valve designs. Shut off the water supply and drain the tank before beginning the replacement.

Highlights

  • Manual flush valve kit includes flapper for complete repair
  • Korky brand trusted for reliable toilet parts
  • New condition ensures full performance from installation
  • Regular type fits standard toilet configurations
  • Model 4030PK identifies exact replacement kit

Specifications

BrandKORKY
TypeRegular

Questions about this item

How often will the included flapper need to be replaced?

The flapper is a wear part; typical life is several years depending on water chemistry and usage.

What is the first limit reached during continuous flushing?

The manual flush valve relies on tank refill time, so sustained use is limited by how quickly the supply line refills the cistern.

Does the valve make noise or heat up when the toilet is used repeatedly all day?

It operates silently with no electrical components, so there is no motor noise or heat buildup during heavy daily use.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.