Stream former in the nature of stream regulators for shower heads and water faucets, namely, faucet aerators in the nature of aerators for pressure pipes, faucets the foregoing producing a unique grid-like spray pattern; water flow regulators, and jet regulators in the nature of water flow controllers for sanitary purposes, namely, stream controllers for spray, laminar flow or aerated stream the foregoing producing a unique grid-like spray pattern; flow rate regulators and flow restrictors, namely, tap water faucets, anti-splash tap nozzles and shower applications in the nature of hand held showers, shower heads, spray jet nozzles for bathtubs, all for sanitary water outlets the foregoing producing a unique grid-like spray pattern