This PVCSB42 is an adapter bushing that features a sewer spigot and DWV hub connection types. It is made of lightweight yet highly durable PVC material for resistance against chemicals and abrasion. This adapter bushing is commonly used for the collection of domestic waste as well as for stormwater. It also serves as an extension when transitioning from a 4" PVC sewer hub to a 2" DWV hub. In addition, this adapter bushing can withstand a maximum temperature of 140 degrees Fahrenheit and is absolutely flame retardant. Here at PlumbersStock, we make it our top priority to offer you quality fittings for your plumbing needs. You may now get this adapter bushing for a discounted price!