... valves, timer and meter controlled Applying NSF certificate control valve BNT-175CE and Rohs certifiedApplying NSF certificateDescription:Big LCD screen, ... used for over 50 years.Regeneration mode options: timer, meter immediate and meter delayedDuration of every cycle ... by meter, timer, meter delay, timer meter mix) BNT-1751F (Softener valve by meter,timer, meter delay, timer meter mix)Regeneration ...