.~ Liquid seal in liquid flow line; flow liquid forms seal {8}
247.25
.~.~ Seal replenishers
DEFINITION
Classification: 137/247.25
(under subclass 247.11) Devices having (1) a distinct compartment with a restricted orifice which stores flow line liquid during flow and discharges it into the seal after the flow ceases in order to assure a seal or replace lost seal liquid, or (2) a connection to an outside source of seal liquid for the same purpose.
SEE OR SEARCH THIS CLASS, SUBCLASS:
114, and 118, for valves providing correlated flow in seal replenishing apparatus of the (2) type.
240, for means to add a cleaning material to a fluid handling system.
