Impfarmatur 95730970Injection units connect the dosing line with the process line. They ensure a minimum counterpressure of 0. 7 bar, and avoid backflow of the dosing liquid. The spring loaded non return valve comes with Tantal spring These injection units are used where regular cleaning of the injection pipe is required. The construction allows the withdrawal of the injection unit from the process line and the cleaning of it, without stopping the water flow. The