Blackmer LGF1PE Power Pump, 6-13 gpm (22-49 L/Min), 1/4" NPT

The built-in spring loaded pump relief valve on the LG1 pump models has a dual purpose. The valve provides an external bypass back to the tank to provide relief of excess pressure. The valve also will act as an internal relief valve recirculating fluid within the pump to provide relief of excess pressure if the separate back-to-tank line is closed. Refer to "Relief Valve Setting and Adjustment" for proper valve setting and adjustment procedure.