Additional Water Enters the Toilet Bowl: during the re-filling of the cistern or toilet tank, as long as the toilet fill valve is open to allow water to enter the toilet, most designs use a small diameter tube to direct a portion of the incoming water down the cistern tank overflow tube (see sketch above) and into the toilet bowl.Re-Filling the Toilet Cistern or Tank: When the toilet tank water level reaches the proper level, the float closes the toilet tank fill valve.Īt the end of the flush cycle, a float arm, or a float moving on a vertical stalk (newer valves) drops to open a valve permitting the toilet tank to refill with water. That in turn moves the flush lever arm inside the toilet tank or cistern in order to lift a flapper valve or tank ball to permit water to rush into the toilet bowl below, washing away waste into the sewer pipe. Flushing the toilet opens the flush valve: Pushing down on the toilet flush handle or lever (or on some toilets lifting or pressing a button) operates.What Happens when a Toilet is Flushed: 3 Basic Operations CONTEMPORARY TOILET DESIGNS - separate article offers more toilet shapes and a catalog of types of modern flush toilets.FLUSHOMETER TOILETS that do not use a cistern or tank.OTHER TOILET FLUSH TYPES - listed below. Here we describe the basic sequence of operation when a toilet is flushed and we explain the function of the key toilet flush and fill valves and diverter / overflow tubes. While there have been improvements in toilet tank fill valves, flush valves, floats, and water savings, the design has remained about the same. At left we see the flush handle on a modern tank or cistern operated gravity flush toilet. Tank reservoir toilets have been in wide use since the 1940's and some tank reservoir or cistern flushed toilets have been in use for more than 100 years. Toilet Tank-Reservoir (Cistern) Flush Toilets & How They Work We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Here we explain how to diagnose and repair problems with toilets, leaks, flushes, odors, noises, running and wasted water. This article series describes the different types and models of toilets: historical or old toilet types, wooden high wall-tank toilets, conventional reservoir tank toilets, low-flush toilets, water saving toilets, back-flush toilets, up-flush toilets, and even chemical toilets. This article explains how a flush toilet operates and describes the types, parts, and operation of the toilet cistern or toilet flush tank. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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