With thinner walls than Schedule 40 fittings, these are lighter in weight and have more space on the inside for high-flow applications, such as underground gravity-flow sewer and storm drainage lines. They are also known as SDR 35 fittings.

These Schedule 40 fittings are the industry standard for gravity-flow drain, waste, and vent (DWV) applications.

These adapters connect PVC waste pipe to cast iron pipe without adding bulk. Instead of securing pipes together from the outside like clamp-on couplings, these flexible adapters fit into cast iron pipe to create a tight compression seal.

The snap-together design allows you to quickly connect these fittings to pipe with no cement required. Fittings are typically used in gravity-flow drainage applications.

Connect two pipes that are up to 100 feet apart—cut the connector to the length you need and attach a clamp to each end.

Use this pipe in gravity-flow applications both above and below ground.