Hydraulic system B includes which components beyond the basic trio?

• A. Filter, Pressure Regulator, Double Action Actuator, Selector Valve
• B. Reservoir, Pump, Actuator
• C. Reservoir, Pump, Actuator, Filter
• D. Reservoir, Pump, Filter

Answer: (A)

The idea here is that a hydraulic system beyond the basic trio adds components for cleanliness, control, and bidirectional actuation. A filter is essential to keep hydraulic fluid free of particulates that can wear seals and valves. A pressure regulator is needed to hold system pressure within safe and effective limits, protecting components and smoothing operation. A selector valve provides the means to direct fluid flow to either side of the actuator, enabling controlled movement in one or both directions. A double action actuator is specifically capable of producing force in both directions, which requires proper flow control and direction—something the selector valve supplies. Together, these parts make the system safer, more controllable, and capable of true bidirectional operation, beyond the basic reservoir, pump, and actuator setup.