Abstract: A cartridge-style flow sensor for sensing fluid flow within a manifold. The sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller automatically issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit. The cartridge hydraulic flow sensor is easily and releasably engaged to a cavity of a hydraulic circuit manifold.

Abstract: A two-stage compaction device for compressing residue metal waste and squeezing excess fluid from the waste, having a pre-compaction cylinder, a pair of compaction chambers, and a pair of die cylinders, all aligned along a common horizontal axis; each of the compaction chambers has an ejection plunger and ejection slot for removing compressed pellets of metal waste and for draining excess fluid accummulations. The pre-compaction cylinder and the die cylinders have pistons within the compaction chamber, and the actuation of the pistons is controlled to first compress residue waste material in one compaction chamber and then to compress residue metal waste material in the other compaction chamber while the ejection plunger is activated in the first chamber to eject the previously compressed pellet.