MARCHESINI OMP, OMR Motor Mounted Relief Valve 1/2in BSP (60 L/Min Flow Rate) - Sparex Part S.139555MARCHESINI OMP, OMR Motor Mounted Relief Valve 1 2'' BSP (60 L min Flow Rate) Sparex Part No. S. 139555 USE AND OPERATION Made up by two cross port relief valves, these valves ore used to limit the pressure in the both ports of a hydraulic motor to a certain setting. Direct flange mounting for orbital motors type OMP OMR provides maximum safety, very low pressure drop and a robust installation. MATERIALS AND FEATURES CONNECTIONS Flange M1 and M2