Covers fittings for water-closet flushing cicterns, single system having discharge volume not exceeding 6 dm3 per time and couple system having discharge volume not exceeding 6 dm3 or 3 dm3 per time, as the case may be, with minimum service pressure 0.1 Mpa and maximum service perssure 0.5 Mpa. Prescribes requirement for value closing, pressure resistance, refill and discharge volume, discharging leakage, twisting resistance and proof load of ball cock, durability. Includes packaging, marking and labelling, sampling and criteria for conformity and testing.