and specific heater models including the 1403

protecting downstream components from the destructive forces of short circuits

low-friction connection for 5/16" diameter damper rods

Using LP orifices for natural gas will cause significantly under-fired burners and poor heating performance

CO leakage

Mueller W02747 Elbow and specific heater models includingThe Mueller W02747 is a professional grade 1 1 8" OD Long Radius 90 Degree Elbow engineered for high demand HVACR and pressurized plumbing environments. As a veteran preferred wrought copper fitting, the W02747 is designed with a long radius profile to minimize internal turbulence and pressure drop, which is essential for maintaining optimal flow rates in modern high efficiency systems. This sweat connection elbow (C x C) provides a reliable,