Pilot Valve 

Description

This is a component of the “Air Operated Reversing Whistle Assembly (Kit)” The part provides the mechanism by which the reversing siren is activated and deactivated. When the gear on the vehicle is changed into reverse, a hydraulic switch is activated to allow the flow of air through the system to whistle. When the gear on the vehicle is change from reverse, a hydraulic switch is deactivated to block the flow of air through the system to the whistle.