Top 5 Best Toilet Flush Valve

A running toilet can be incredibly annoying, not to mention wasteful. Often, the culprit is a faulty flush valve. Replacing it is a pretty straightforward DIY job that can save you money on plumber fees and water bills. Finding the right flush valve can be tricky, though. There are so many options, and not all are created equal. So, I’ve rounded up five of the best toilet flush valves on the market to help you make the right choice.

Product Overview / Quick Summary

  • Fluidmaster 400A Universal Toilet Fill Valve: A reliable and affordable standard replacement.
  • Korky 528T QuietFILL Toilet Fill Valve and Flapper Kit: Known for its quiet operation and easy installation.
  • TOTO TSU99A.X Universal Fill Valve: Specifically designed for TOTO toilets, ensuring optimal performance.
  • KOHLER Genuine Part GP1083167 Complete Flush Valve Kit: A complete kit from a trusted brand.
  • American Standard 3174.007-0070A Champion 4 Complete Flush Valve Kit: Designed for high-performance flushing.

Top 5 Best Toilet Flush Valve Reviews

1. Fluidmaster 400A Universal Toilet Fill Valve

The Fluidmaster 400A is a classic for a reason. It’s a simple, reliable, and budget-friendly option for replacing a worn-out fill valve. It’s designed to fit most standard toilets and is easy to install, making it a great choice for DIYers.

Pros:

  • ✅ Universal fit for most toilets.
  • ✅ Easy to install with clear instructions.
  • ✅ Affordable and readily available.

Cons:

  • ❌ Can be a bit noisy compared to newer models.
  • ❌ Primarily plastic construction, which might not be as durable as some metal alternatives.
  • ❌ Doesn’t include a new flapper, so you might need to purchase one separately.

Verdict: If you’re looking for a basic, inexpensive replacement that gets the job done, the Fluidmaster 400A is a solid choice. It’s perfect for quick fixes and standard toilets.

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2. Korky 528T QuietFILL Toilet Fill Valve and Flapper Kit

If you’re tired of a noisy toilet, the Korky 528T QuietFILL is a great upgrade. This kit includes both the fill valve and a new flapper, making it a complete solution for many common toilet problems. It’s designed to be quiet and efficient.

Pros:

  • ✅ Extremely quiet operation.
  • ✅ Includes both fill valve and flapper.
  • ✅ Easy to install with a twist-lock adjustment.

Cons:

  • ❌ Slightly more expensive than the basic Fluidmaster.
  • ❌ May not be compatible with all older or unusual toilet models.
  • ❌ Some users have reported issues with the flapper chain being too long.

Verdict: The Korky 528T is an excellent choice if you value quiet operation and want a complete replacement kit. It’s a bit pricier, but the noise reduction is worth it for many people.

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3. TOTO TSU99A.X Universal Fill Valve

If you own a TOTO toilet, using a TOTO-specific replacement part is often the best way to ensure optimal performance. The TOTO TSU99A.X Universal Fill Valve is designed to work seamlessly with TOTO toilets, providing a reliable and efficient flush.

Pros:

  • ✅ Specifically designed for TOTO toilets.
  • ✅ Ensures optimal flushing performance.
  • ✅ High-quality construction.

Cons:

  • ❌ More expensive than universal options.
  • ❌ Only suitable for TOTO toilets.
  • ❌ May require more specialized knowledge for installation.

Verdict: For TOTO toilet owners, the TOTO TSU99A.X is the best choice. It guarantees compatibility and helps maintain the performance of your toilet.

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4. KOHLER Genuine Part GP1083167 Complete Flush Valve Kit

KOHLER is a well-known and trusted brand in the plumbing industry, and their Genuine Part GP1083167 Complete Flush Valve Kit lives up to that reputation. This kit includes everything you need to replace your flush valve, including the valve, flapper, and hardware.

Pros:

  • ✅ Complete kit with all necessary components.
  • ✅ High-quality construction from a trusted brand.
  • ✅ Designed for reliable performance.

Cons:

  • ❌ Can be more expensive than other options.
  • ❌ Installation may be slightly more complicated for beginners.
  • ❌ Some users have reported issues with the flapper not sealing properly in certain toilets.

Verdict: If you’re looking for a high-quality, complete flush valve kit from a reputable brand, the KOHLER GP1083167 is a great choice. It’s a bit of an investment, but it offers peace of mind knowing you’re using a reliable product.

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5. American Standard 3174.007-0070A Champion 4 Complete Flush Valve Kit

The American Standard Champion 4 is known for its powerful flushing performance. If you have a Champion 4 toilet or want to upgrade to a high-performance flush valve, the American Standard 3174.007-0070A Complete Flush Valve Kit is an excellent option. It’s engineered for a strong, efficient flush.

Pros:

  • ✅ Designed for high-performance flushing.
  • ✅ Complete kit with all necessary components.
  • ✅ Durable construction.

Cons:

  • ❌ Primarily designed for American Standard Champion 4 toilets.
  • ❌ More expensive than standard flush valves.
  • ❌ May be overkill for toilets that don’t require high-performance flushing.

Verdict: If you need a powerful flush or have an American Standard Champion 4 toilet, this is the flush valve kit for you. It’s designed to deliver exceptional performance.

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Buying Guide

Choosing the right toilet flush valve can seem daunting, but here are a few key things to consider:

  • Compatibility: Make sure the flush valve is compatible with your toilet model. Some are universal, while others are designed for specific brands or toilet types.
  • Type of Flush Valve: There are different types of flush valves, including flapper valves and canister valves. Flapper valves are more common, while canister valves are often found in newer, high-efficiency toilets.
  • Material: Flush valves are typically made of plastic or brass. Brass valves are more durable but also more expensive. Plastic valves are more affordable but may not last as long.
  • Ease of Installation: Consider your DIY skills. Some flush valves are easier to install than others. Look for models with clear instructions and minimal tools required.
  • Noise Level: If you’re sensitive to noise, look for flush valves that are designed for quiet operation.
  • Complete Kit vs. Separate Components: Decide whether you want a complete kit that includes all the necessary components or if you prefer to purchase the valve and flapper separately.
  • Price: Flush valves range in price from around $10 to $50 or more. Set a budget and choose a valve that meets your needs without breaking the bank.

FAQs

Q: How do I know if my flush valve needs to be replaced?

A: Common signs include a running toilet, a weak flush, or a toilet that refills slowly.

Q: Can I replace a flush valve myself?

A: Yes, most flush valves are relatively easy to replace with basic tools and some DIY skills. Just make sure to turn off the water supply to the toilet first.

Q: What tools do I need to replace a flush valve?

A: You’ll typically need an adjustable wrench, a screwdriver, and possibly pliers. A sponge or towel to clean up any water spills is also a good idea.

Q: How long does it take to replace a flush valve?

A: It usually takes about 30 minutes to an hour, depending on your experience and the complexity of the valve.

Q: Are all toilet flush valves universal?

A: No, not all flush valves are universal. Some are designed for specific toilet brands or models. Check the product description to ensure compatibility.

Conclusion

Choosing the right toilet flush valve can make a big difference in the performance and efficiency of your toilet. Whether you’re looking for a budget-friendly replacement, a quiet operation, or a high-performance flush, there’s a valve out there that’s perfect for your needs. Take the time to consider your options and choose a valve that will keep your toilet running smoothly for years to come.

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