It is installed in low-pressure or return pipelines of hydraulic system; The filtering material of the filter element can be appropriately selected as required; The shell is made of cast iron and the lower shell is stamped and formed by thick-walled steel plates. The differential pressure transmitter is selected according to needs. Operating pressure (max): 2.5Mpa operating temperature: -25℃~110℃ Pressure setting of indicator : 0.35Mpa By-pass valve unlocking pressure : 0.5Mpa