IPEX Canplas SDR 35 6 In. PVC Sewer and Drain CouplingUsed to join two pieces of PVC Sewer & Drain Pipe or provide a Hub connection at the end of the pipe. BENEFITS compared to other sewer and drain piping systems: Costs less to operate Greater hydraulic efficiency Life cycle (50+ years) APPLICATIONS: Building sanitary, storm and landscape drainage Foundation perimeter drains Septic field installations Unless otherwise noted, products are approved listed by CSA International, NSF and IAPMO to standards