Hydrocyclone has no moving parts. It consists of a conically shaped vessel, open at the bottom, variously called the underflow, apex or spigot, and connected to a cylindrical section which has a tangential feed inlet. The top of the cylindrical section is closed with a plate through which passes an axially mounted overflow pipe. The pipe is extended on to the body is the cyclone by a short, removable section known as vertex finder, which prevents short- circulation of feed directly into the overflow.

Star Trace Hydrocyclone Test Rig is designed for laboratory testing of classifying various solids in a slurry. It is equipped with a Hydrocyclone, a sump a slurry pump with a internal piping and valves to circulate the slurry through the cyclone from the sump or to re-circulate the slurry, and a pressure gauge to monitor the pressure drop across the cyclone. All equipment is conveniently mounted on floor or Steel frame.