Abstract: The waste truck having a hydraulically operated packer blade in combination with a hydraulically operated rotary cart tipper driven by a rotary actuator. The packer blade resides within a chamber of the truck and is movable therein. The hydraulically driven rotary actuator of the cart tipper rotates the cart tipper from a first down position to a second up position and includes a metallic shaft with an arcuate slot therein sensed by an inductive proximity sensor. The diverter valve is a solenoid operated, 2-way normally open, pilot operated poppet valve and functions as a hydraulic interrupt valve which permits safe operation of the hydraulically operated packer blade and prevents collisions of the packer blade with the rotary cart tipper.