The simple answer is no. Because of the varying fill rates (flow volumes) of the washing cycles for dishwashers and washing machines the different dishwasher and washing machine manufacturers are now building their own proprietary flood stop devices to suit their individual machines.

It is not mandatory to use the flow control adaptors as long as the water flow is restricted to less than 9litres per minute after the flexible hose (this is often done through an end of line flow controlled aerator). The flood stop device is governed by a predetermine flow rate. To truly govern the rate of flow exiting the flexible hose a flow controller is fitted to the end of the flexible hose. When maximum water flow exits the flood stop device and enters the flexible hose, but is then restricted at the exit end of the flexible hose, this truly isolates the hose and eliminates any of the environmental hydraulics in the installation environment including in-line and mixer tap air pockets.

Yes. Once again to isolate the weakest link of the plumbing system which is the flexible connector hose, it is recommended that a flow device be installed at the exit point of the hose before the cistern inlet. This is traditionally done by screwing a male/female brass adaptor with a flow control disc located inside onto the threaded inlet of the toilet cistern. This has no impact on how much water will flush into the toilet bowl.

Yes. The maximum flow rate allowed for a WELS rated product is 3 stars which equates to 9 litres per minute nominal water flow. Each flood stop device is tested so it will operate with these WELS products as the flood stop device will close when the flow is between 9.5 and 10.5 litres per minute.

No. All this will do is reduce the flow of water which will in turn will reduce the effectiveness of the flood stop device should the flexible hose burst as the predetermined shut-off flow rate will not be reached. Ensure all plumbing fittings are installed in an environment with a maximum operating pressure of 500kpa.

It is advisable to turn the tap handle to the full open position then wind the handle back about half a turn. This will help with the longevity of the tap spindle whilst still maintaining maximum water flow out of the device.

Firstly turn the tap handle to the fully closed position. This will automatically reset the flood stop valve. Next replace the damaged hose and ensure both ends of the hose are attached securely and are water tight. Gently turn the handle to the on position and you will here the water flow into the hose. Inspect for any leaks.

If you are installing and commissioning a mixer tap without flow controllers attached to the end of the flexible connector hoses you may have to slowly lift the handle of the mixer tap on both the hot and cold sides to expel any air that may be present in the mixer as the quick flow of water filling the air pocket may cause the flood stop device to engage.