What term describes the piping that connects the compressed air source to control components?

What term describes the piping that connects the compressed air source to control components?

• A. Supply line
• B. Pilot line
• C. Return line
• D. Exhaust line

Answer: (A)

The supply line is the path that carries compressed air from the source to the control components, providing the main feed that powers valves and actuators. This line directly connects the compressor (or air source) to the system’s control elements, enabling them to function. The pilot line, in contrast, carries a smaller control signal to shift a valve rather than supplying the main working air. The exhaust line vents air to atmosphere when a valve releases pressure, and a return line isn’t the standard term for the main supply path in a typical pneumatic circuit.

The supply line is the path that carries compressed air from the source to the control components, providing the main feed that powers valves and actuators. This line directly connects the compressor (or air source) to the system’s control elements, enabling them to function. The pilot line, in contrast, carries a smaller control signal to shift a valve rather than supplying the main working air. The exhaust line vents air to atmosphere when a valve releases pressure, and a return line isn’t the standard term for the main supply path in a typical pneumatic circuit.