Part 3 Ball-cock / Float Valves BS1212/3
BS1212 part 3 is the British Standard number for diaphragm type plastic float operated valves in WC toilet cisterns.
Part 3 float valves (also known as ballcocks, inlet valves, fill valves or ball valves) look like part 2 valves and operate in the same way – the main difference is that they are made from plastic instead of brass.
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