![Fernco 4 in. Service Weight Cast Iron Hub x 3 in. Sch. 40 PVC Compression Coupling P44U-305 - The Home Depot Fernco 4 in. Service Weight Cast Iron Hub x 3 in. Sch. 40 PVC Compression Coupling P44U-305 - The Home Depot](https://images.thdstatic.com/productImages/b4195878-4b90-4ab6-8588-16b7e59e83a0/svn/black-fernco-pvc-fittings-p44u-305-64_600.jpg)
Fernco 4 in. Service Weight Cast Iron Hub x 3 in. Sch. 40 PVC Compression Coupling P44U-305 - The Home Depot
Tie In to Cast-Iron Pipe With PVC | No-hub couplings make it easy to tie in to existing cast-iron drain/waste/vent lines with new PVC. Here's how to do it: | By Fine
![2 1/2" PVC kitchen drain going to 1 1/2" cast iron pipe constantly getting clogged b/c of this lip : r/Plumbing 2 1/2" PVC kitchen drain going to 1 1/2" cast iron pipe constantly getting clogged b/c of this lip : r/Plumbing](https://i.redd.it/kiljcv4px4r51.jpg)