The Sandringham 21 Cistern – 6/4L Dual Flush Water-Saving Tank is a high-quality toilet cistern designed to deliver efficient flushing performance while reducing water usage. With its dual flush capability — offering both 6-litre and 4-litre options — it provides flexibility for different waste levels, helping conserve water and lower household bills without compromising performance.

Crafted to complement the Sandringham 21 range, this cistern features a durable construction and smooth white finish that matches most toilet pans. It is engineered for reliable, long-term performance and easy installation, making it a practical choice for both new bathroom builds and renovation upgrades.

The dual flush mechanism is simple to operate and ideal for modern UK homes where water efficiency is increasingly important. By selecting the smaller flush for liquid waste and the larger flush for solids, you can make significant savings on water usage over time — contributing to both environmental benefits and cost reduction.

What Problem Does It Solve?

Traditional single-flush cisterns use the same amount of water regardless of need, leading to unnecessary water usage and higher utility bills.

This dual flush cistern solves that by offering tailored flush options, allowing you to conserve water without sacrificing performance.

Why It’s Better Than Cheap Alternatives

Cheaper cisterns may lack reliable dual flush mechanisms or be prone to leaks and inefficient performance. The Sandringham 21 cistern is engineered for consistent, smooth operation, with high-quality components that resist wear and deliver dependable water-saving functionality.

Uses & Applications

Perfect for use with Sandringham 21 close coupled toilets and other compatible pans, ideal for bathrooms, en-suites, cloakrooms, family homes, rental properties, and renovation projects across the UK.

Features

• 6/4L dual flush water-saving system
• Smooth white finish
• Reliable flushing performance
• Durable construction
• Easy to install
• Reduces water usage and bills
• Compatible with standard UK toilets
• Ideal for modern bathrooms

FAQs

What does 6/4L dual flush mean?
It offers two flush volumes — 6 litres for solid waste and 4 litres for liquid waste — to save water.

Will it fit my toilet?
Yes, it is compatible with most UK close coupled toilets.

Is it easy to install?
Yes, it has a standard fitting design for straightforward installation.

Does it help reduce water bills?
Yes, the dual flush system reduces overall water usage.