Fleck (11978) ByPass Top Plate Max Adaptor (65-4000) Brass 1/2" NPT x 1/2" NPT x 1/4" (No Adapter) Every 8-12 months

Every 8-12 months

check for leaks

failing to draw brine properly

then slowly turn water supply back on and check for leaks

The Pentek EP-BB (model 155548-43) fits standard 10-inch Big Blue filter housings with 4

Fleck (11978) ByPass Top Plate Max Adaptor (65-4000) Brass 1/2" NPT x 1/2" NPT x 1/4" (No Adapter) Every 8-12 monthsFleck Control Valve Component Fleck 5600 ByPass Top Plate (11978) Replacement top plate for Fleck metal bypass valve assemblies across all 5600 series configurations Universal Fit OEM Part Metal Construction The Fleck 11978 top plate is the upper component of the metal bypass valve assembly found on 5600 series control heads. This single part covers both 3 4 inch and 1 inch bypass configurations and works across all generation versions of the Fleck