The DIN Y Steainer is an indispensable device in the transmission medium pipe, which is usually installed at the inlet of the pressure relief valve, pressure relief valve, fixed water valve or other equipment to eliminate the impurities in the medium, so as to protect the normal use of the valves and equipment. When the fluid enters the filter cartridge with a certain filter screen, the impurities are blocked and the clean filtrate is discharged from the filter outlet. When the cleaning is needed, the removable filter is taken out and reloaded after treatment. It is very convenient to use and maintain. The German standard filter is suitable for the hot oil system, power plant, steam system, hot water system, thermal power plant, natural gas supply system, water circulation system, freezing system and other industries.