Mueller W04048 1-1/8" Tee Class RK5 fuses will fit

Class RK5 fuses will fit into standard 250V fuse clips

this OEM component ensures seamless compatibility with FVIR (Flammable Vapor Ignition Resistant) systems and high-efficiency gas control valves

technicians can adapt 1/4" lines using standard reducers or short lengths of 5/32" tubing as couplers for the terminal connection

maintaining the original engineering specifications for safety and performance in the field

This specific 117U relay series is optimized for HVACR commercial units

Mueller W04048 1-1/8" Tee Class RK5 fuses will fitThe Mueller W04048 1 1 8" Tee is a high performance wrot copper pressure fitting engineered for demanding HVACR and plumbing applications. This CxCxC copper tee features a 1 1 8 inch outside diameter (OD) on all three branches, providing a seamless 1 inch nominal connection point for distributing fluid or refrigerant flow. Built from UNS C12200 copper alloy, the fitting is optimized for both soldering and brazing, ensuring reliable subterranean or