1.1 This standard covers requirements for manually-operated high-level and low-level flushing cisterns of capacities 5 litres and 10 litres, both single flush and dual flush types, for water-closets, squatting pans and urinals, together with flush pipe details.
1.2 Plastic flushing cisterns are not covered in this standard.
IS 774-1984 history
1985IS 774-1984 Specification for flushing tanks (other than plastic tanks) for water closets and urinals