This is a direct acting bi-directional relief valve designed to protect both lines in a circuit from over pressurization by relieving oil to the other line. Ideal for use with motors or directional valves as a emergency relief. The differential area means a fast acting poppet valve. The Motor Mounted bodies reduce the need for excessive piping and instead give a clean interface for the Relief Valve to be used in conjunction with your motor. The prime sized ports allow for directly connecting the valve bank to the motor.