Colour Code Flow Regulator: Blue.
Flow rate: 10.0 l/min
Bore diameter: G 1/2"
Pressure range: 1 - 10 bar
The PCW-01 washer regulator is a washer with dual function: flow regulating and sealing. 
Typical applications are 1/2" shower hose fittings or shower heads G1/2". It's easy to install and therefore perfect for retrofit.
WATER-SAVING – a convenient and inexpensive way to save water and energy when taking a shower
HIDDEN INSIDE – and invisible from the outside (theft-proof)
RETAINING TABS – for secure positioning
EASY INSTALLATION – in any 1/2" shower hose fitting; perfect for retrofit
In order to easily identify the complete PCW product range, the elastomer component will be colour coded as well from now on.
The PCW-01 elastomer component is the outer ring around the flow regulator.
The new distinctive feature:
metric flow rates = grey elastomer component
US flow rates = white elastomer component
This identification improvement entails no technical or approval relevant implications.