- Made of high quality plastic for hygienic and food, it controls the water pressure. It gives the desired efficiency at 70 m. It is also possible to use it in the middle of the line. The closed rear cover must be removed during use in the middle. Line cleaning can be done by pressing upwards quickly without turning the adjustment nut at the bottom of the regulator. In this way the line ends must be open, so that the cleaning takes place in a fluid manner.