3-Inch Dual Flush Valve Replacement Kit – Fix Weak Flush & Leaks

Name: 3-Inch Dual Flush Valve Replacement Kit – Fix Weak Flush & Leaks
Brand: VIKECAT
SKU: B0H2GTVZJF

Disclosure: We may earn a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Learn more

10/10

Check Price on Amazon

Highlights

【TOILET NOT WORKING RIGHT】When your toilet keeps running and won’t flush clean, the problem follows you every day — water leaking into the bowl, slow refills, constant noise, and weak flushing that makes the toilet feel dirty, noisy, and unreliable.
【THE HIDDEN BILL YOU IGNORE】A toilet leak may look minor, but every unnecessary refill adds up. When the tank keeps refilling day after day, hidden water waste quietly becomes a higher water bill.
【NO MORE PART-BY-PART GUESSING】Stop guessing which tank part failed. This complete 3-inch Dual Flush Valve Kit, replaces the key worn parts together — flush valve, fill valve, dual flush button, tank-to-bowl gasket, mounting bolts, and sealing washers — to restore reliable flushing, proper refilling, and a secure tank seal.
【CHECK FIT BEFORE ORDERING】Designed for two-piece toilets with a top-button, 3-inch dual flush system, thistoilet valve replacement kit fits 3.2"–3.6" flush valve openings, approx. 1.89"–2.17" (48–55mm) top button hole diameter range, and an adjustable 8"–12" fill valve height range. Not for 2-inch outlets, side-handle toilets, non-dual-flush tanks, or most one-piece toilets.
【DIY REPAIR MADE EASIER】Designed for homeowners replacing worn toilet tank parts, thistoilet flusher replacement kit can be installed with basic hand tools. Trimmable button rods help match different tank heights, making the replacement feel more manageable without special plumbing experience.

Why You'll Love It

Replaces all primary tank components at once to resolve running water and weak flushes
Adjustable fill valve extends from 8 to 12 inches to suit varying tank depths
Fits standard two-piece toilets featuring a 3.2 to 3.6-inch flush valve opening
Includes trimmable push-button rods to ensure accurate alignment with your tank lid
Complete hardware package includes mounting bolts, sealing washers, and tank gasket for installation

Pros

+Comprehensive all in one tank hardware set
+Adjustable fill valve height
+Trimmable top button rods
+Installs using basic hand tools

Cons

-Incompatible with 2-inch flush outlets
-Not suited for side-handle toilets
-Will not fit most one-piece designs

Detailed Review

The VIKECAT 3-Inch Dual Flush Valve Replacement Kit is an all-in-one hardware bundle designed to address running water, bowl leaks, slow refilling, and weak flushes. Instead of troubleshooting individual seals or components, this setup targets common toilet tank problems by replacing the entire internal mechanism at once for homeowners managing DIY plumbing repairs.

The package contains the core components needed to rebuild the tank interior, including the 3-inch flush valve, a fill valve, a top-mount dual flush push button, a tank-to-bowl gasket, mounting bolts, and sealing washers. To accommodate different tank dimensions, the fill valve height adjusts from 8 to 12 inches, and the dual push-button rods can be trimmed down to match the exact depth of your lid.

Installation is designed for basic hand tools without requiring professional plumbing experience. Replacing worn seals and valves simultaneously helps stop water constantly leaking into the bowl, quiet continuous refilling noises, and prevent unnecessary water waste from ongoing tank refills.

Compatibility is strictly limited to two-piece toilets equipped with top buttons and 3-inch systems. It requires a flush valve opening between 3.2 and 3.6 inches and a top button hole diameter of approximately 1.89 to 2.17 inches (48 to 55mm). It will not work on standard 2-inch outlets, single-flush tanks, side-lever handles, or most one-piece toilet configurations.

Verdict: This replacement kit is an ideal match for homeowners needing to overhaul a leaking or weak 3-inch top-button dual flush system. Provided your tank matches the exact opening and height dimensions, it supplies all the necessary parts for a straightforward DIY refresh.

Specifications

Flush Valve Size: 3-inch system (fits 3.2"–3.6" openings)
Top Button Hole Diameter: Approx. 1.89"–2.17" (48–55mm)
Fill Valve Height Range: 8"–12" adjustable
Included Parts: Flush valve, fill valve, dual flush button, tank-to-bowl gasket, mounting bolts, sealing washers
Toilet Compatibility: Two-piece toilets with top-button dual flush

Who Should Buy It

A great fit if you:

Own a two-piece toilet with a top-mounted dual flush button.
Have a tank with a 3.2 to 3.6-inch flush valve opening.
Need to fix persistent bowl leaks, slow refills, or noisy running water.
Want to replace all internal tank hardware at once using basic hand tools.

Consider something else if you:

Have a toilet with a 2-inch drain outlet or a side-mounted trip lever.
Own a standard single-flush or one-piece toilet model.

FAQ

What toilet styles are compatible with this kit?
This kit is designed for two-piece toilets with a top-button dual flush system. It does not fit side-handle toilets, non-dual-flush tanks, 2-inch outlets, or most one-piece models.

What tank dimensions are required?
Your tank needs a flush valve opening between 3.2 and 3.6 inches, a top button hole diameter of about 1.89 to 2.17 inches (48 to 55mm), and enough height to fit the 8 to 12-inch adjustable fill valve.

What parts come in the package?
The kit includes a dual flush valve, an adjustable fill valve, a top dual flush push button with trimmable rods, a tank-to-bowl gasket, mounting bolts, and sealing washers.

Do I need specialized tools for installation?
No, the replacement kit is designed for DIY homeowners and can be installed using basic hand tools.