Series MRPA… 2-way flow-control valves are size 10, high performance, load-compensated screw-in cartridges with an M33 x 2 mounting thread. By means of a fixed orifice and an integral pressure-compensator function, the flow rate to an actuator is kept constant regardless of load changes. The load compensation is done by the pressure-compensator piston, which maintains the pressure drop across the fixed orifice at a constant level. The flow-control cartridges can be supplied with various fixed orifices that determine the flow-control range. Using the adjustable pressure-compensator spring, the required flow rate (the range depends on the fixed orifice) is adjusted built in the system. The spring is adjusted by means of an adjusting screw or a hand-knob. To safeguard valve settings, the adjusting spindle can be sealed with a tamper-proof cap.