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 5" filter housings or expensive

5" filter housings or expensive stainless steel cartridge assemblies

but initial purging ensures clean water from the start

It serves as a direct replacement for Doulton W9223002

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

Model Number Whatts-HD4500BB34PR Manufacturer Watts Housing Size 10 inches Cartridge Size 2

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 5" filter housings or expensiveJohn 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.