... interior walls result in lower pressure loss and higher volume5). Long Life: More than 50 years under normal conditions 6). Environment ... ,end cap ,stub end,45°elbow,90°elbow,Equal tee,reducing tee,Femad adapter,male adapter,female elbow,male elbow,female ... 3segments),22.5°Elbow,11.25°Elbow,Reducing Tee (Saddle type),Reducing Tee (Equal tee being reduced),Reducing cross fitting (saddle type),Reducing ...