2. 0 gpm Drain Line Flow Control ( DLFC ) Button ( sometimes referenced as "washer" ) is commonly used with softener valves installed on 9" diameter resin tanks. Also used as BLFC ( brine line flow control ) button in commercial brine valves ( such as 60034 and 60039 ).

• 2.0 gpm Drain Line Flow Control ( DLFC ) Button ( sometimes referenced as "washer" ) is commonly used with softener valves installed on 9" diameter resin tanks.
• 2.0 gpm Drain Line Flow Control ( DLFC ) Button ( sometimes referenced as "washer" ) is commonly used with softener valves installed on 9" diameter resin tanks. Also used as BLFC ( brine line flow control ) button in commercial brine valves ( such as 60034 and 60039 ).