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2 definitions found
From:
Webster's Revised Unabridged Dictionary (1913)
Cen·ter seal
,
or
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
.
◄
►
From:
Webster's Revised Unabridged Dictionary (1913)
Center 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
.
◄
►
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