Faucet Aerators With Integral Flow Regulator (PCA)
PCA faucet aerators are equipped with a pressure-compensating flow regulator that, along with an O-ring, helps deliver a constant flow rate regardless of pressure fluctuations. The elastomer subjected to the line pressure is compressed into the seating area, thus reducing the water passage. As the pressure decreases, the elastomer relaxes and reopens the water passage to allow smooth flow. In addition to the water-saving effect, a constant flow rate also allows water to be distributed evenly across multiple draw-off points.