Drain Line Flow Control ( DLFC ) Retainer For 5600 and 9000 Injector Drain Modules.
Includes the ultra thin o-ring, PN 15348 ( almost invisible ).
This retainer sits inside the 1/2" drain fitting connection on the Fleck 5600 and 9000 models.
It can be unscrewed using needle nose pliers to gain access to the DLFC Button behind it for cleaning or replacement.