How Does Flowban Work?

Stop Bathtubs & Sinks from Overflowing

Don't let Bathtub Overflow cause Thousands in Damage

Flowban Download Installation Instructions & Tech Sheet

How Does Flowban Work Video

Flowban is a simple solution to the Bathtubs & Sinks Overflowing problem. Invisible to the bath user, it requires no extra sensor to be fitted inside the tub and no electricity supply to operate. It is intuitively self-resetting and Maintenance FREE.

Flowban has been designed for easy installation using John Guest push fit connections. It must be located between the overflow outlet and the waste.

Faucets left unattended can result in bathtubs flooding which can cause expensive damage down multiple floors. Even if the overflow outlet can deal with the incoming water, something they often fail to do on jet tubs, the wasted water and the energy used to heat it is an unnecessary expense.

Faucets left running can easily be forgotten and within minutes the water can reach the overflow, a short time later it can be flooding the bathroom! Some people deliberately allow the faucets to keep running so they can continuously top up with hot water. This is very wasteful and can cause flooding as well.

Flowban® is connected to the overflow pipe between the outlet from the tub and the waste. The hot and cold pipes are connected to the supply ports either side of the float chamber.

When the water level in the bath reaches the overflow outlet, water enters the central chamber and activates the float. As the float rises, the magnets that are set into each end of the float react with the magnets on the flapper valves in the supply ports. The flapper valves are pushed into the water flow where the water pressure holds them in the closed outlet.

A trickle of water is allowed to bypass the flapper valve and out of the faucet. The trickle indicates the faucet is still open, but the water level will drop and the central chamber drain. This allows the float to revert to its rest position, but the flapper valves stay closed, held in place by the water pressure.

Once the faucet is finally turned off, the pressure equalizes each side of the flapper valve which is then drawn back to the open position by the magnet on the float. The faucet can now be opened again, and full flow will resume.

Flowban Efficiency

Flowban® has only three moving parts. It uses no electricity, being entirely mechanical in operation. Resetting the system after shut off is simply intuitive. No user instructions are necessary and, if the installation is hidden by a bath panel, there is no need for anyone to know that a flood prevention device is fitted.

Flowban No Maintenance or Servicing

Under normal usage conditions Flowban® requires NO Maintenance or Servicing. However, it is recommended that a bi-annual check is carried out to confirm correct functioning of the unit. If foreign matter is obstructing the movement of the float in the central chamber, then cleaning will be required but access to the chamber is very simple.