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Tank-valve.


Railroad-engineering.) A form of valve used in locomotive water-supply tanks, for admitting water to the discharge-pipe.

In the example, the discharge-pipe a is telescopic, and is connected by a universal joint at b to the short pipe c, so that it may be swung laterally and raised or lowered by the chain d which passes over pulleys at the top of the tank, and is provided with weights, nearly counterbalancing the weight of the pipe. The interior clack-valve e is independently raised by the cord f attached to the lever g, which has a connecting-rod leading to the valve.

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