—vertical shell and tube surface condensers

—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

—extra connections

—special casing or shelf arrangements

—product pans (trays) fabricated of carbon steel, stainless steel, and other alloys

—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