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float valve

A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y Ramírez, a Mexican priest and scientist, who described the device in 1790 in the Gaceta de Literatura Méxicana. The ballcock device was patented in 1797 for use in steam engines by Edmund Cartwright.It consists of a valve connected to a hollow, sealed float by means of a lever mounted near the top of the tank. The float is often ball-shaped, hence the name ballcock. 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 rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow. This is an example of negative feedback and of proportional control.

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  1. G

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  2. G

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  3. E

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  4. W

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  5. P

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  6. B

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  7. O

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  8. S

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  9. R

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  10. J

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  11. R

    Cold water tank sizing??

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  12. G

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  13. T

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  14. D

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  15. shaky

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  16. D

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  17. P

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  18. N

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  19. P

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  20. M

    What is causing my pipe hammer...?

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