Ball-cock / Float Valves

Ball-cock / Float Valves

Ball-cock / float valves are used to automatically control the level of water in a storage tank or toilet cistern. A moving ball / float rises with the water and operates the valve, shutting off the water supply when it is at the correct level.

Interesting fact : the modern ballcock valve was invented by José Antonio de Alzate y Ramírez, a Mexican priest and scientist, who in 1790 described the valve in the Gaceta de Literatura Méxicana.

BS 1212 is the British Standard for float operated valves.

Typical applications :

BS1212 Part 1 brass ball-cock / float valves are used in older cold water tanks and central heating feed and expansion (header) tanks.

BS1212 Part 2 brass ball-cock / float valves are used in modern cold water tanks and central heating feed and expansion (header) tanks.

BS1212 Part 3 plastic ball-cock / float valves are used as inlet / fill valves in older toilet cisterns.

BS1212 Part 4 plastic ball-cock / float valves are used as inlet / fill valves in modern toilet cisterns.

The threaded connections of these ballcock valves use a British Standard Pipe Thread size - see BSPT link at bottom of page for more info.

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