—refrigerated or dry-ice traps

—vacuum pumping systems: mechanical, water-sealed,
or steam jet

—heating systems: steam, water, oil, or other fluid

—cooling systems: direct or indirect

—bag-type vacuum dust collectors with controls for intermittent shaking or pulsing of material back into the dryer

—dust-tight discharge hoppers and valves for filling containers

—instrumentation for process control and documentation: fully wired control panels or field-mounted individual instruments for sensing, indicating, or recording temperature, pressure, and other variables

—complete systems with components assembled on a common baseplate