For high-precision measurement of large volumes of cold water with a temperature of up to 50 °C passing through the meter, at a maximum working pressure of up to 16 bar (PN16). They are installed on horizontal sections of the pipeline with the scale up (H). In the standard modification, water meters of type JS, -NKOP are produced in a painted cast-iron housing, with a 6-roller drum counter mechanism (IP65). Water meters can be used in remote data transmission (AMR) systems.