Upgrade your toilet’s performance with the Fluidmaster 400 Series Inlet Cistern Valve – the world’s most trusted and best-selling toilet fill valve. Whether your toilet keeps running or fails to refill, this high-quality valve offers a quick, reliable solution.
Engineered for efficiency, this valve precisely regulates water flow into the cistern, ensuring a fast and quiet refill after every flush. Designed with durability, water conservation, and ease of installation in mind, it’s the ideal choice for maintaining a trouble-free, high-performing toilet system.
Key Features:
- Easy Installation – No special tools required.
- Bottom Entry Design – ½″ brass thread for secure fit.
- Height Adjustable – 225 mm to 355 mm for a perfect fit.
- Quiet & Fast Refill – Minimizes noise without compromising speed.
- Anti-Siphon Protection – Safeguards your water supply.
- Durable Construction – Long life and consistent performance.
- Non Cross-Threading Plastic Thread – For easy maintenance.
- View Installation Guide.
Fluidmaster® is the world’s #1 toilet parts brand, trusted in over 100 million toilets every year. Known for superior quality and innovation, our products are backed by an industry-leading warranty, giving you confidence in every flush.



























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