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As the tank water level drops, the float descends and actuates the fill valve. Water is fed to the tank to replenish its supply, and a smaller flow is directed into the overflow tube to refill the bowl. Once the flapper valve closes, the water flow from the fill valve continues until the tank level again reaches the fill line.
The ballcock or float valve is often used to regulate the filling of a tank or cistern. When the fluid level drops, the float descends, levering the valve opening and allowing more fluid to enter. Once the float reaches the 'full' position, the arm presses the valve shut again. Tank fill valves are found in all tank-style toilets. The valves ...
The valve is often described as a needle valve, although this is a misnomer. A true needle valve uses a tapered needle in a tapered seat, so as to provide fine control over flow rate. The float valve uses a pointed needle against a square-edged seat, to give a positive shut-off. As the float relies on gravity, the chamber must be mounted ...
The modern toilet utilises a cistern to reserve and hold the correct amount of water required to flush the toilet bowl. In earlier toilets, the cistern was located high above the toilet bowl and connected to it by a long pipe. It was necessary to pull a hanging chain connected to a release valve located inside the cistern in order to flush the ...
Filled areas to match other diagram. Category:Valves Category:Plumbing Category:Inkscape: 11:36, 23 May 2010: 1,190 × 954 (22 KB) Egmason {{Information |Description={{en|1=The Concentric Float valve opens when the fluid level is low, allowing more fluid to eneter (Figure 1).
These are more specific types of valves, used only in particular fields or applications. Often they are subcategories of the classification by operating principle and by function: Aspin valve: a cone-shaped metal part fitted to the cylinder head of an engine; Ballcock: often used as a water level controller (cistern)
A level control valve or altitude control valve is a type of valve that automatically responds to changes in the height of a liquid in some storage system. A common example is the set of ballcocks in a flush toilet, where each stage of the flush cycle is actuated by the emptying or filling of the tank. Another example is in reservoirs and other ...
In the United States, jurisdictions enact their own codes, some of which are based upon model plumbing codes. The most widely adopted plumbing code in the United States is the International Plumbing Code published by the International Code Council (ICC). This code is also used as the basis for the plumbing codes of some other countries.
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