The 3-port DCV is held in the energized position by which component?

The 3-port directional control valve (DCV) is typically held in the energized position primarily by the operator. In pneumatic systems, when the operator, such as a push button, toggle switch, or similar device, is activated, it engages the valve mechanism. This activation causes the internal components (like the spool) to shift and direct the flow of air to specific ports, thus maintaining the energized state until the operator is deactivated.

The spool is the moving part within the valve that directs flow but does not maintain its position independently. The body of the valve houses all the components but does not influence the holding mechanism directly. Springs are often used for returning the spool to its original position when the operator is released but do not keep the valve held in the energized position. Thus, the operator is the key component that secures the valve in its energized state during operation.