Faucet Aerators, Check valves, Flow regulators, Flow rate control, and Water stream shaping from Neoperl Drinking water is our planet's most vital resource. Neoperl products are often found in use wherever water flows. They shape the water stream, regulate its flow rate, filter it, protect it and distrib Neoperl offers products that shape and control water streams, meet flow rate regulations, protect from backflow and facilitate compliance with Codes and Standards. We provide faucet aerators, sprays and laminar devices as well as check valves and flow regulators for applications in the United States, Canada and Mexico.