In pneumatic systems, what controls the engagement of the load until it is at speed?

In pneumatic systems, the engagement of the load until it reaches the desired speed is controlled by the bleed air valve switch. This switch plays a crucial role in managing the flow of bleed air used to start systems or components that rely on pneumatic power.

When the system is activated, the bleed air valve remains closed until the associated component, such as a turbine or compressor, reaches a specific speed. This prevents premature load engagement that could lead to inefficiencies or damage. By regulating air pressure and flow, the switch ensures that load engagement occurs smoothly and only when the pneumatic system is adequately prepared to handle it.

This control mechanism is vital for the protection and optimal performance of the pneumatic system, ensuring operational safety and reliability.