Febco - LFFRK 850-CK4 8-10 870 CK4 8 - Part of the RK-LF850/856ST/LF856/LF860/LF870V/876VST/LF876V/LF880V Series Window Well Extension and the isolation nipple helps

and the isolation nipple helps decouple slab motion from the drainage path

ZB1901-RL3

Repairs can be made inline

UPC - 098268303186

brass filter with plastic housing

Febco - LFFRK 850-CK4 8-10 870 CK4 8 - Part of the RK-LF850/856ST/LF856/LF860/LF870V/876VST/LF876V/LF880V Series Window Well Extension and the isolation nipple helpsThis check kit includes the parts necessary to repair or replace either the first or second check module of an 8 and 10 inch in line double check assembly, the first or second check of an 8 inch N or Z pattern double check assembly, the first check of an 8 or 10 inch in line double check detector assembly, the second check of an 8 or 10 inch in line reduced pressure zone assembly, the first check of an 8 in N or Z pattern double check detector