A ballcock is a mechanism for filling water tanks, such as those found in flush toilets, while avoiding overflow.
It consists of a valve connected to a float by means of a lever, mounted near the top of the tank. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level has risen to the desired point, the float forces the lever to close the valve and shut off the water flow.
These devices are sold at most hardware, plumbing supply, and home improvement stores.
A ballcockvalve for a railway vehicle, according to claim 3, wherein said extension pipe is generally U-shaped when said air exhaust aperture is positioned in a generally vertical direction at an upper surface of said main body portion.
A ballcockvalve for a railway vehicle, according to claim 1, wherein said extension pipe is generally U-shaped when said air exhaust aperture is positioned in a generally vertical direction at an upper surface of said main body portion.
Therefore, when the ballcock is mounted in a manner such that the air exhaust aperture is positioned upwardly of a general horizontal direction, the opening surface of the extension pipe can be positioned lower than this horizontal direction by connecting the extension pipe to the pipe connection of the air exhaust aperture.
A toilet tank ballcock is designed for use in a toilet tank having an operating lever, a flush valve controlled by the operating lever and a water supply, with the ballcock regulating the supply of water to the tank.
In ballcocks of the type disclosed herein there is a float which moves between spaced stops with the lowering of the float to the lower stop opening the ballcock refill valve and the raising of the float to the upper stop closing the refill valve.
Thus, the height of the ballcock assembly on the riser tube is adjustable, depending upon the desired volume of flow from the toilet tank.
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