(under subclass 309) Apparatus having valve means to permit flow of system fluid around a separating means to thereby avoid the separating function of at least that one separating means.
(1) Note. In this subclass are collected patents having an auxiliary inlet which is downstream of the separator and which is hand controlled.
(2) Note. Flow control of gas for separators in parallel either as distinct units or as separator parts of a single unit is not subject matter for these subclasses.