Nearly all systems now have these types of buttons for flushing fitted to their WCs. These systems are not big enough for the older type of ball and float mechanism. The inlet valves on these types can be a modified diaphragm type with a very short float arm, and miniature float, or a vertical valve with a float cup that fits round the centre of the valve body. Falconwood Plumbers have expert knowledge on this subject. These are quiet when operated, however the float cup is slow filling up the cistern if it is fed from somewhere other than a mains supply. In these slimline modern systems there is a plastic valve operated flush mechanism that is operated by top fitted button sat in the lid of the cistern. There is also an overflow incorporated. The two part button, is pressed once for a short low volume of water flush, and pressing both parts results in a full volume of water flush. The button is linked to the plunger rather than the wire link float arm system.

Installation.

The design of the valve is very clever. A Falconwood Plumber is familiar with theses types of valves. However it is quite fiddly to adjust it for a good fit. So when installed, the valve must be altered so that the critical level on the body of the valve is at least 25millimetres above the top of the overflow. The adjustment can be made via a threaded shank at the base of the valve assembly so that correct location can be achieved.

The float cup inlet valve consists of a rubberised ring seal on the outside bottom of the cistern which will need to be replaced after a while but will not cause too much trouble.

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