... and meter controlled Applying NSF certificate control valve BNT-175CE and Rohs certifiedApplying NSF certificateDescription ... to operate.Use switching power supply (100-240V), world-wide powder adapted.Use classic pistion valve structure, which has been widely used for ... delay, timer meter mix) BNT-1751F (Softener valve by meter,timer, meter delay, timer meter ... " Drain pipe: 1/2" Control Valve BNT-175