top steam

top steam

[′täp ‚stēm]
(chemical engineering)
Steam admitted near the top of a shell still to purge the still, and to prevent a vacuum from forming when pumping out the liquid contents.
References in periodicals archive ?
For additional information about the tests or Daimer[R]'s steam cleaners, upholstery steam cleaner systems, top steam cleaner for floors or best vacuum steam cleaner machine for janitorial contractors, visit www.
Ashington No 5 was one of the region's top steam engines and regularly took thousands of passengers around the North East.