Clack (R7009)-890 In/Out Head w/ 1/2" Port Micron Rating1577 this NSF-42 certified filter fits

this NSF-42 certified filter fits standard 20-inch Big Blue housings and outperforms traditional GAC and PAC filters in whole-house

Whirlpool and other manufacturers using standard big blue housing dimensions

KDF-55 Redox Media Reduction

The Watts FSRO20 Flexwave is engineered for commercial and high-volume residential RO systems where larger pressure differentials and storage capacity are critical

Pre-attached tubing and ceramic disc valve technology make this a professional-grade fixture that installs quickly and performs reliably for years

Clack (R7009)-890 In/Out Head w/ 1/2" Port Micron Rating1577 this NSF-42 certified filter fitsThe Clack RA201 890 In Out Head is a 1 2" port control valve head designed for integration with Clack water softener systems, providing reliable inlet and outlet control for residential and light commercial applications. This genuine Clack component (model RA201 890) ensures proper flow management and system cycling in compatible valve assemblies. SPECIFICATIONS Clack RA201 890 In Out Head Technical Specs Manufacturer Clack Corporation Model Number