Flow control devices are not required for each individual fitting and may control one or more WC area, such as adjacent male and female toilets within a core. However, when using a single device to control the supply to multiple areas, the strategy must account for the occupancy and function of each space, to ensure that the aim of the criterion is met.
Combining multiple cores with varying occupancy using a single flow control device has the risk that faults in infrequently used sanitary facilities could continue to leak undetected.
