Which component is typically used to direct pneumatic or hydraulic flow to cylinders in automation systems?

Which component is typically used to direct pneumatic or hydraulic flow to cylinders in automation systems?

• A. Proximity sensor
• B. Photoelectric sensor
• C. Solenoid directional valve
• D. Indicator lamp

Answer: (C)

Directing the flow of compressed fluid to a cylinder in automation relies on a directional control valve. When that valve is solenoid-operated, a electrical signal shifts the valve spool to connect the pressure supply either to one side of the cylinder or to the other, while venting the opposite side. This simple change in connections makes the cylinder extend or retract as commanded. The other devices listed are sensing or indicator components that do not control the path of the fluid. A proximity sensor detects presence, a photoelectric sensor detects a beam, and an indicator lamp shows status. So the solenoid directional valve is the component that actually directs the pneumatic or hydraulic flow.

Directing the flow of compressed fluid to a cylinder in automation relies on a directional control valve. When that valve is solenoid-operated, a electrical signal shifts the valve spool to connect the pressure supply either to one side of the cylinder or to the other, while venting the opposite side. This simple change in connections makes the cylinder extend or retract as commanded. The other devices listed are sensing or indicator components that do not control the path of the fluid. A proximity sensor detects presence, a photoelectric sensor detects a beam, and an indicator lamp shows status. So the solenoid directional valve is the component that actually directs the pneumatic or hydraulic flow.