D defs.my
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Entry 2 senses · 2 variants Webster, 1913

Center seal

· Cen·ter seal · IPA
01 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 renew…
  1. 1.
    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.(Gas Manuf.)
02 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 renew…
  1. 1.
    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.(Gas Manuf.)