SMC (6850090) 685 Series PVC NSF Check Valve ; 1/2"FNPT x 1/2"FNPT Buna - Pack of 3 Intelifil (IF-SM-SCIG020B) 20"X4.5" Big Blue (GAC) Carbon/Polyphosphate Scale Inhibitor/Chlorine Filter Remove the old cartridge and

Remove the old cartridge and clean the housing interior and o-ring with a mild bleach solution

while the side stroke adjustment provides precise output tuning from 0 to 91 GPD without tools

Works across both E-Series and ELF-Series product lines

and other microorganisms at full effectiveness

This double-layer of protection ensures zero water spillage even if the internal valve doesn't fully seal on older units

SMC (6850090) 685 Series PVC NSF Check Valve ; 1/2"FNPT x 1/2"FNPT Buna - Pack of 3 Intelifil (IF-SM-SCIG020B) 20"X4.5" Big Blue (GAC) Carbon/Polyphosphate Scale Inhibitor/Chlorine Filter Remove the old cartridge andSMC 685 Series NSF Certified Check Valve SMC 6850090 PVC Check Valve 3 Pack NSF rated check valve for reliable backflow prevention in RO systems and water treatment applications NSF Certified PVC Construction 1 2" FNPT Threaded Connections Buna N Seal Material Pack of 3 The SMC 685 Series check valve prevents reverse flow in residential and light commercial water filtration systems. Built with NSF certified PVC body and Buna N seals, this valve