What charges the pneumatic system when the valve is actuated on a BAK-14?

The pneumatic system in a BAK-14 is charged by a 3-way solenoid valve when the valve is actuated. This type of valve plays a crucial role in controlling the flow of air within the pneumatic system. When electrical current activates the solenoid, the valve opens or closes pathways for air, allowing it to either charge or release pressure in the system.

In the context of the BAK-14, this means that the 3-way solenoid valve directs compressed air to the appropriate chamber when needed, facilitating the operation of the pneumatic components essential for the system's functionality. The design and mechanism of the 3-way solenoid valve make it an effective choice for quickly controlling the pneumatic system without manual intervention, which is essential for remote or automated operations.

Other options present valid components but do not specifically charge the pneumatic system in this context. A pressure regulator manages the air pressure but does not initiate the charging process. A manual lever could also control air flow or pressure but requires manual operation, which is not the case here. Similarly, while a diaphragm pump could potentially move air, it is not the designated component for actuating the pneumatic system in this scenario.