'Centre seal' definitions:

Definition of 'Centre seal'

From: GCIDE
  • Center seal \Center seal\, Centre seal \Centre seal\ (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime. [Webster 1913 Suppl.]

Definition of 'Centre seal'

From: GCIDE
  • Center seal \Cen"ter seal\, or Centre seal \Cen"tre seal\,. (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime. [Webster 1913 Suppl.] centre seal