Small investment - great saving

Have made to the shower before installing the "bucket test" and came to around 15 liters per minute flow rate. After the very easy installation of the green piece of plastic, the flow was reduced to something more like 8 liters per minute. The shower spray is also very pleasant and my fair did not notice the installation and the shower time did not change :-) (2nd floor, 3 bar pressure, hydraulic Heater 18kW). Since the shower is very often used, approx 400x a year for about 10 minutes, that would mean an almost unbelievable saving of approx 25m3 water ca 500kW - and only at the shower!
The installation of the water tap in the bathroom turned out to be a bit "difficult", but was done there in about 5 minutes. There is also considerable savings of water and energy - but there made any tests.
These plastic parts feel to quality and are a time to do determines their service. Goods was securely packed and was shipped very fast.