John Guest - Speedfit Twist & Lock Compression Female Connector, Push to Connect Plastic Plumbing Fitting 3/8" OD x 9/16"-24 UNEF Omnipure (E5686) 12"x2.5" Diameter E-Series GAC & 4 oz. Phosphate - Scale Inhibitor Know what's in your water

Know what's in your water before you drink it

expect roughly 50 gallons of ultra-pure water before the resin is exhausted and needs replacement

It serves as a direct replacement for Doulton W9223002

though both serve the QT RO product line

} GE Water / Replacement Filter Cartridge

John Guest - Speedfit Twist & Lock Compression Female Connector, Push to Connect Plastic Plumbing Fitting 3/8" OD x 9/16"-24 UNEF Omnipure (E5686) 12"x2.5" Diameter E-Series GAC & 4 oz. Phosphate - Scale Inhibitor Know what's in your waterJohn Guest Speedfit Twist & Lock Push to Connect Female Connector 3 8" OD x 9 16" 24 UNEF compression fitting for copper, CPVC, and PEX tubing. No tools, torches, or glue required. IAPMO Approved NSF Certified Lead Free Behind Wall Safe WHY IT WORKS Push fit technology with collet locking system Twist & Lock Security Unique collet locking system holds tubing firmly in place. Twist feature provides added connection security for permanent installations.