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Simple No Leak Flushing with a Syphon

What are the Benefits of a Dual Flush Toilet Syphon?


  • maintenance
  • plumbing
  • toilet cistern

If you have a lever action toilet cistern, installing a Pro Ultra Universal dual flush syphon is a great option to ensure leak prevention and water saving. Want to know more about the features of a dual flush syphon? Read on… 

Understanding Toilet Syphons

A toilet syphon is a tried and tested option for flushing a toilet cistern. Offering a reliable alternative to a dual flush drop valve, a modern syphon enables the efficient and effective operation of a toilet, providing excellent benefits. 

How Does a Toilet Syphon Work?

The flushing mechanism of a dual flush syphon is a surprisingly simple, but incredibly effective way of releasing water from the cistern into the toilet pan to flush away waste. A flushing syphon utilises an upturned, u-shaped tube that allows water to move upwards against gravity and then back down to a lower level to be released into the toilet bowl. 

The syphon itself consists of several parts, including the stem, the bell housing and the diaphragm washer.

When the toilet handle is depressed, the lever action elevates the lift arm, which pulls on the connecting ‘C-link’ to activate the diaphragm washer. The diaphragm washer pushes upwards forcing the cistern water upwards and over the bend in the bellhousing, down the stem. Syphonic action and gravity allow the cistern to empty until air is reintroduced into the system, completing the flush.

What are the Key Features of a Dual Flush Toilet Syphon?

  • Water Efficiency: Dual flush toilet syphons are designed to use the ideal amount of water necessary to clear the bowl, contributing to water conservation efforts.
  • Hygienic Operation: By ensuring that waste is effectively removed from the bowl, dual flush syphons maintain a high level of hygiene in the bathroom.
  • No Leaks: Because flushing the dual flush syphon requires for the cistern water to be carried ‘up and over’ using syphonic action, even in the event of a breakdown, the syphon won’t leak water from the cistern into the pan.

What are the Benefits of a Dual Flush Toilet Syphon?

  • Reduced Water Bills: Efficient water use translates to lower utility bills for those with a water metre. 
  • Environmental Impact: Conserving water helps protect our planet’s natural resources. Considering that just 1% of the Earth’s water is fresh, readily available drinking water, conservation is more important than ever before. 
  • Maintenance: Issues with toilet syphons are unusual. When occurring they are often related to the wear and tear of the diaphragm washer. Often problems are fixable, with some simple maintenance. In addition, our Pro Ultra Universal dual flush syphon comes with a 10 year warranty for peace of mind. 

If you would like to switch to a reliable syphon, our Pro Ultra Universal dual flush syphon is a compact size, ensuring that it will be suitable for most 1 ½” lever operated cisterns. It is also quick and easy to install, features light touch activation and flush volume adjustability to ensure water saving. 

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