The HFA4 90 GPM Return Line Filter from Buyers Products blocks contaminants down to 10 microns in size from returning to your hydraulic reservoir. The dual filter design is ideal for high flow volume applications, such as large dump bodies. It is rated up to 90 GPM for return line flow and can take up to 150 PSI of working pressure, with your choice of a 15 or 25 PSI bypass. The assembly comes with the filter head and either a 10 or 25 micron filter element. Items can also be purchased separately.